Preparation, Readiness, and other cooldown resetting abilities may have grim future

Classes with cooldown resetting abilities probably won't find one of Ghostcrawler's most recent tweet all that surprising. The abilities (Preparation, Readiness, etc.) have been targeted by several nerfs and changes this expansion. Ghostcrawler wrote the following in reply to a tweet that said it may be time to stop adding cooldown resetting abilities to the game if they're constantly going to be nerfed.

The abilities are particularly problematic in PvP, where players can chain several attacks or crowd control abilities together within a short period of time. What do you think? Do cooldown resetting abilities belong in the game? Are they overpowered?