I've been doing some sound boarding with 4-5 guildmates on this. We seem to unanimously agree its a time killer and often frustrating mechanic right now. But it is also an extremely important tool as one of the only options against wild buff stacking or stalemates. And with the proposed attribute stat changes which represent a significant improvement in those stat's benefits, buff stacking is going to even more important, further widening the valley between elites and casual players - something that will reduce fun for casuals, and some will not stick around to try to become elites (not their playstyle, or not enough time).
Removing Purge from PvP completely will disproportionately favor elite players. Those are players which are frequently in the highest level circles providing suggestions and encouragement, risking a group-think. (No offense Nord - you are part of that demographic; are vocal, influential and carry strong, often inflexible opinions which support the way you want to play the game.)
There are a lot of creative options to either tweak this ability to eliminate the time-wasting and most frustrating aspect about it, or reinvent it. My friends had dozens of solid ideas in our discussion which I'd be happy to share. Again, if this is committed to as the preferred approach, please just remove it from the skill tree all together and make room for something relevant. (Edit: I can't think of any PvE situations currently where purge is important. Yes it works on some NPCs, but with jedi solo-ing every instance except EK without purge, evidence suggests it's not important.)