Do you think "Lifestyles" is the only traits overhaul?

Maybe? I mean, if they become the most lauded thing, they may not bother with anything else. They also may decide nothing else is worth their time this late in the life cycle.

I certainly want to see the lifestyles expanded. I am not 100% how they are going to do it without DLC for DLC or making it base game. Though I suppose they can introduce the functionality every time they add more, buy if that was the plan why not have had some BG and some SE from the beginning?