They changed half the cast almost arbitrarily and I spent the first 20 minutes being like :jesse-wtf: trying to figure out what happened.
Apparently there was like a 15 year time jump or something but most of the characters that didn't change actors look pretty much the same.
Anyway, the show remains very mid, but this bugged he hell out of me. I kinda feel like they went through all the trouble just so they could have a young looking actress get mostly nude in the first arc. Either that or some galaxy brain scheme to save on labor costs.
They should have just started the show when they were slightly older and used age makeup. I don't have any problem with stuff like this personally - I'm usually very good at suspending disbelief but they went about it in such a disjointed way.