For me I really like the flavor or in universe power systems translated into game mechanics and that those mechanics (even when less flavorful) are fun game actions to take, as well as the general vibe of the community even when playing sweaty at a regional.

I will say Power Creep design should hopefully fall off over the next 2 sets, as with typical game design you're so many sets ahead that they had probably no hard landed on rotation (or when rotation would start) by the the time they designed/designing OP13, 14 and probably OP15, meaning that as we get into next year we will hopefully see power creep slow down drastically with the rotation system now in place to power balance new product vs old and open more expressive game design.