You're fine, it's up to date and many of the Seasons-specific AM-related issues have been ironed out. There might be a few bugs dealing with temperature, Sims being hot and cold at the same time, but most of the serious ones are fixed.

Extended / Long, but customized. Used the Rule of 6 as a base, adjusted the Young Adult through Elder stages to my liking (short Elder, Young Adult longer than Adult), multiplied each length by 7/6 so each new phase starts on the same day of the week as the previous, then doubled it all. Some hint of realistic age lengths, and it's long enough for me develop some form of attachment- like between a human and a small pet- but not so long that their lives turn into a grind.

Slightly modified "Rule of 6," only expanded to seven so ages end on the same day they begin (with a 2/5 split for baby/toddler), then doubled so time doesn't seem to fly by so fast.

Laundry, you say? That does fit into my data of this funky "random low mood score" business. I'll try to look into this a bit more, but so far of the four Sims in the household-

Traits relevant to Clothes Washing:
Father: Slob
Mother: Neat, Family Oriented
Son: Family Oriented
Daughter: Neat

- the two most prone to the low mood are the three that do the laundry, primarily the daughter who (autonomously) does most of it. The other two are hit by this as well, though not as severely. In tune with that, the father almost never has the mysterious motive mismatch. I'll run a few tests to see if anything stands out. Thinking of something along the lines of two Slobs, two Neats, set in our identical house structures (all on one lot), and all locked to each individual, a set of cheap washing machines in half, and expensive ones in the others.

Most certainly not a product of low Room Score. After a handful of days, Sims suffering from the Negative Mood effect tend to be quite unhappy, no matter their surroundings, and as a simple test, saving and exiting to the main menu, then loading back into the game, cures them as soon as game-time resumes. So yeah, no change in location or Room Score, and is fixed after the game re-checks their motives, but something's definitely off.

One option that comes to mind, and to be honest I haven't tested it, to get the object in question into the target family inventory would be to Select the family you wish to give the object to, then use the Control+Shift command "Debug: Add to Family Inventory." Otherwise, assuming you have Ambitions, there's always the Architect career, though the object would have to be in your own family's inventory. Money, mildly more tricky, would require twallan's Master Controller, which contains a money transfer feature.

Seconded.

By "interest" do you mean flirting/romantic, or just social interest in general? Specifically, as there's next to no "romance" in my neighborhood- quite dull really- will this change that?

1. Spraying pesticide on bug-riddled plants, if memory serves. Might take as many as 100 sprays to have a chance at turning green.
2. Uh... they gain a gold badge for Gardening, and can spawn plant babies.
3. Call them on the phone, under Services, usually during the day. They show up, you greet them, then ask for a membership card.
4. Harvest the fruit / vegetables / boots (yes, boots), buy the juicer found in the Small Appliances section, where the coffee maker is. Once that's done, click the juicer and select "Add Ingredients" or something close to that. If you have enough ingredients for a certain juice, you can make it. If not, you need more.

After the initial first impression (fantastic, my crap's broken!), uh... well, the second was trying to figure out how to generate townies, as the "debug + mailbox" combination resulted in... defective generation. It was creating things like "NPC Robot," my own sims, etc... probably a tech bit, so back on track...

After that, the third was pretty much an "Umgah" moment. By that, I mean "To Arms! To Arms!... wait a minute! Don't HAVE any arms! AIEE!! MY ARMS!!"

To make sense of myself, after inadvertently erasing all of my downloads to fix the townie creation thing, I decided to just grab a few key things and run with it. My personal experience with this game...  well, not a particular fan of either of the other two packs, so it's no real surprise that this one wasn't quite like I expected it to be. University was too boring, and Nightlife too... frankly, underwhelming, but this... I think "perplexed" almost counts, and is about as close as I can get to it right now. First three businesses of mine could only make money by cheating, which is a giant neon sign saying I need to try a bit harder to do this right, more or less.

Final summary: Uh... okay, good concept, abundantly confusing setup.

From my personal experience at least, by "mascot outfit," they show up in their college mascot outfit, be it either cow or llama, depending what they were. Basically, what they were in college, that's what they show up in.

Very true on that, naturally.

One of the best incarnations of my Malachi family and their household (which I am yet unable to fully replicate), shortly after "buying" a love tub with the father's aspiration points, and kicking the parents out, no sooner had two days passed than he comes barging into the living room, through the kitchen, and hopped into the very same tub (family, and pure Leo (outgoing 10)).

Case two, in one of the incarnations of that very same family (I tend to restart my neighborhoods on a fairly constant basis) after installing University, I run my main sim through college with some others, pick up a cow mascot (bad choice), finish college, marry, etc... so, I switch to another lot, to continue playing another branched family of mine, and... now an elder, she goes straight into their house, - one once belonging to the Caliente sisters - and plopped down on the couch. Didn't even know the owners. (college NPC, high outgoing).

Yeah, Maxis and their screwy ideas for features... okay, so some of them are along the lines of "Uh... yeah, we meant to do that, therefore it's not a bug. It's a feature!" and so on and so forth, rambling on nonsensically in that direction. Just verifying what's been said.

Though the auto-dress feature would be instantly nulled by the bathroom controller, to a certain extent. Put simply, they leave the bathroom dressed. So either the auto-dress code could be connected to the bathroom controller (rather silly idea, I think) or to the sleep clock, adding to their their queue a "Change" action after the "Be Used" command, at a guess...

Though choosing what they sleep in via the clock still seems useful, it is reasonably pointless to a degree. They're only wearing what you pick for a short time, if the house is "empty" (no active Sims), but it would only be good for adding some degree of "authenticity" to vampires if you want them to sleep in formalwear, or something like that.

Edit to add:

Okay, my final suggestion/request on the matter of sleepwear is this: how much trouble would it be to let them "decide"- based upon their preference of course- what to wear, most likely as an option so as not to kick out what's already there... with a potential "vampire + formal" option?

Alright, I have a suggestion for that, though not a very "sharp" one. Adding an "auto-dress" feature of sorts. Once they're awake and standing, they change to a specified outfit, be it normal, formal, work or whatever else the user chooses... however, the bladder/hygeine repair is not addressed, hence the dullness of it.

In that same key, approximately how much bulk (or uselessness) would it be to add an option for what each Sim sleeps in? Granted, what it's set to now requires the lowest relationship score of the two (or three, with Crammyboy's nudist hack). So, that's basically the question, how much damage would it do to include a selection of anything for them to sleep in?