No, this is a bad idea. If all flashpoints become role neutral, then tanks and healers are going to be kicked out of the groups left and right.
Do you want a good example of a role neutral mmo? GW2. Guess what evry1 is running there? A dps (zerker).
SWTOR is an mmo with a holy trinity, it should matter.
The longer queue times for dpsers is not role related problems! Why in WoW they dont have long queues? I guess you can answer this question by yourself.
If they converted this game to totally role neutral or implemented cross-server FP queues, I'd be gone. This new FP sounds like an awesome idea for leveling characters and even better as a future HM.