First it was the removal of the energy regen bonus that was supposed to be given to Sub. Then we got the talent (I forget the name) that restored 2/4/6 Energy each Recup tick, which was awesome.
It's no longer there, and Sub will continue to be energy starved until they stack insane amounts of haste. Thanks Blizz.
I know this is only the first iteration of the talent trees, but they seem to be in a very sad state after the devs announced that it was only the Assasination tree that was unfinished, amongst other classes.