Jiggles and crying time, along with the Wet and Wounded mentioned above, used to be crucial for me. I also used Snarly's EZ Skin 3 on every render for Superfly, his snow machine, and the "sweaty" script quite a lot. The worst loss for P12 from my perspective was Virtual Dynamics for hair and cloth. I have to import my figures into P11 for "pre-work," and then render them in P12 now. That's an added and frustrating step for me.