Wow SMN at 60 (and hey at 50 too) just sucks now. Your abilities suggest 30s cycles but your dots aren't extended to 30s until they upgrade well into sixties so you end up clipping dots all day.
Which is doubly upsetting when you realize RDM has its primary kit at 50 and everything after that just fleshes it out.
To be honest, the wait for level 66 has been agonizing (halfway through 65 and I am bit anticipating getting off work today until late), because Bio and Miasma as it is now is clunky as fuck. I think the level 3 spells will alleviate a lot, but the class still has some odd quirks in SB.
I would be able to buy a new PC if I got $1 for every time I blew an aetherflow cast. They might as well not even let you cast the thing if you have 3 aethertrails ready to go (and the MP recovery is pretty bad now).