Personally, I like celebrities, occolt creatures and vampires, taking over my game, because it balances out the realism. Not having those in my game makes it too realistic. Yes, Sims is a life simulator, but I don't think things should be 100% in tune to real life.
I think the KPST could easily work with this EP because KPST is kind of that frivolous fantasy niche that's attracted me to Sims for years.
In other words, I'm very excited to create occolt creatures. I remember when I first played TS3, I was like "wait, I was able to do this when I played TS2 with my cousins on the console..." and now it's finally coming true. I've played normal colored Sims, and I like having Sims with unnatural colored skin, because the towns always have to have some unrealistic elements, which is what attracted me to Hidden Springs and Bridgeport. Sunset Valley was always a bit overrated and too realistic for my liking.
That is a good development, indeed! Control of the occult and celebrities? Yes, please!
There are already mods out there that do this sort of thing. But it's good EA provides it for us instead, especially for those that like to keep their games clean.