I've played for... way too long. Several several hours.
The Bad:
Interface is cluttered, like Pescado said. Bothers me a little
Its' hard to make different looking Sims. Sliders are there but the change they make is rather small. You manage but it takes some teethgritting and going back and forth the sliders. All Sims tend to be very round faced and look pretty much like you see in the screenshots and videos. Very hard to get away from it.
Way too little clothing/hair styles. CAST makes up for it a little but still, shapes are shapes.
Skins look better then I expected but still have this icky plastic sheen.
Makeup looks fugly and phoney. Looks decent with natural colors that are close to skincolor but any more radical colors look terrible and don't fit the face at all.
Sims are still god damn stupid. I get a lot of whining for not being able to sit down when another Sim already went there. Siblings/parents/etc ( twins! ) still refuse to go to bathroom/toilet at the same time ( no privacy plx! ), presumably if they aren't RLY GUD FRIENDZ ( my two Sims who were lovers didnt' seem to mind eachother ).
They said there won't be as much having to go to pee. But it's there, oh it's there.
Skillgrinding. Much more so then in Sims 2 I feel.
Testing Cheats don't give the usual pie-menu as in Sims 2
no playing around with stuff. Can still move motives and such and reassign Traits / force aging to older.
In the end, not a whole lot to do. Get a job, breed, grind skills, repeat. Of course I'm kind of a stupid Sims player.
Babies look hella creepy.
Some things are just plain confusing: no idea how to get married :S No idea how to force-age toddlers/babies before 6pm on their birthday ( birthday cake made my adult age to elder, doh... might've been because I had Testing Cheats enabled ).
STUFF takes forever to do. Between skilling, working and taking care of basic needs, I feel like there is little to no time to be social. It may All Be In My Head though since I'm a stupid Sims player. Having more then one Sim in the household adds to the stressfullness :/
The Good:
CAST. Deserves all the woohaa there is of it. My only problem with it is that I have hard time focusing down on what I want since the choices are nearly limitless.
Sims look prettier. They aren't beautiful, but at least they aren't as ugly as in Sims 2 ( without CC ).
Game runs fast. For now. And my puter isn't amaizing HC gamer rig. More like a Sunday gamer rig.
Interactions based on your Traits are fun. The moodlets ( buffs/debuffs ) are also a bit funny. My Neurotic Sim sometimes gets a small debuff for not checking the faucet for leaking and a buff if he checks it.
More freedom with placing objects is for the win.
Shall go back to lurking nao.