Have people tried running the 3t2 traits alongside Hat's G-rated Religion (or Simmons' Lifestyles variation)?
Does it work?
Is it pointless to use both?

Any other thoughts/experiences on such a combination?

Does the thinking cap also increase badge gain or just skill?

It increases toddler skills if the adult teaching them wears it, so possibly? I don't know, though.

Is it safe/possible to change a sim's age in SimPE? I have some townies I have decided to keep but I don't need so many adults; I want to age some of them down to teens or children.

I could do this in game of course, but it would be much simpler if I could do it en-masse in SimPE.

You can change what age the game thinks they are without changing their bodies or clothing/hair in SimPE, if you want to create a bunch of teens and children with adult bodies who constantly squat to get down to teen/child height. If you want their age to get set properly, you have to age them down in game, ideally by aging them to the age stage below what you want and then aging them up one.

Ah, yeah, I don't want that XD Fair enough. Thanks for the tip also about going one age stage below!

Actually, could I do that in SimPE? ie, set them all as toddlers/kids and then age them up in game, would that set them correctly?

No, probably not.