A couple points...

1. With less server and positional lag at 2.0... even if there is still animation lock... it will be a lot less deadly... and a lot less annoying
Anyone who says that it involves skill now, its a game mechanic... no.. just no... dealing with lag is temporary... having to account for lag should not be a long term mechanic of this game... its a right now.. pre-2.0 mechanic... this kind of lag/latency after 2.0 will indeed kill the game... no matter what

2. Regarding the actual animation lock, it does feel awkward. I can do a weaponskill, and then a flash, going by my chatlog and action bar... the Flash goes off even though my weaponskill animation has just started
It makes it feel weird that my animation for 1 weaponskill overlaps 2 abilities... so at that point I am backed up on animation locks... And it is dangerous when you have multiple animations queued up