I'm okay with werewolves but I'm not that thrilled with the idea of Sims changing without my direct control -- had some issues with them in Sims 3 particularly when they'd leave work early to hunt when the full moon hit (nighttime careers like Culinary or Athletic). I also really enjoyed the Plumbots in ITF -- might have been one of the best features of the pack, tbh -- and would love to see them make a return. I'd especially like the chance to make them more humanoid looking; you could do it with mods in Sims3 but I'd like to be able to take them into CAS the way you can aliens to give them a human disguise. Designing/building robots could either be part of the current Handiness skill or we could get a new Robotics skill; maybe start with two or three "chip slots" but the ability to upgrade to add more.