This really needs to be a baseline ability that you get before level 45. I'm tired of not being able to seriously PvP with the new poison talents because I'm stuck waiting for the next season to start so I can buy the honor gear for the set bonus. I know a lot of people have been rallying for this change for PvE as well. I just don't see the point of this extensive limitation.
These talents really add some depth to the class and not being able to take advantage of them in PvP until we get the set bonus at 90 seems incredibly fucked up.
P.S. I've tried PvPing without crippling and, personally, it just hasn't worked against anyone that knows how to kite.