The 65 Bolstering is really what irks me.
It doesn't feel OK. Going from 16 to a pseudo 65 is one of the most jarring things I've ever witnessed in an MMO. I didn't get new skills, but suddenly I had 55k health and my primary attack was hitting for 2k instead of 150.
I absolutely hated every single moment of it. I haven't done any of the flashpoints past Athiss since I've just started this game, but I refuse to do any more until I'm at level cap (if I actually stick around to that point) simply because the level bolster isn't fun.