Let's look at the ranked must haves:
Juggernaut Tank (Melee)
Assassin Tank (Melee)
Carnage Marauder DPS (Melee)
And because of current state of smashspec, having it on top of the above doesn't hurt:
Smash Warrior DPS (Melee)
So, excluding healers, 4/6 (tank + dps) are melee. the other two could be PT/Sniper/Sorc. The PT will be with those melee, and Sniper has no problems being close to them.
What I mean, is that the game is heavily gimped towards melee, and zerging. So no, I'm not seeing bubble spec as a bad thing.
Yeah, in that regard I dont disagree with you at all. Currently the game is too heavily biased towards melee and this makes the impact of bubbles even bigger- Our VGs hate it especially. So yes, its good to counter the currently bias in the game. Does that mean its actually correct that the bubble has a hands-down mechanical advantage when it comes to stun duration per resolve filled?
Id argue no.