Having just read through all these 6 pages, I'm still looking for the answers to some questions:
Re warmthfixes: Do I still need these with Seasons patch installed? Are they basically the same, or different in any way?
Re Ottomas genetics fix: Did this also fix Patricia Wan's memories?
Warmthfixes hasn't been obsoleted by the patches, so yes, it still fixes issues that EA hasn't.
The Ottomas genetic fix only fixes the templates -- if you already have them in your game, they're not fixed. It will only fix any future versions that get added to any new hoods.