Just faced a pug team with 5 ops, 1 of them a sniper, and 3 sorcs.
2 of the sorcs was bubble stun, other 1 was madness.
Just imagine the cc happening with bubble stun + op open and stun.
Yea it was impossible to move lol.
I dunno, more then one bubble sorc is honestly a waste. I bet you're exaggerating. So much time wasted on failed bubble attempts because of the CD the healer cant always pay attention to. Not to mention the other sorc - if a healer (yes, I know he was madness here)- was probably using his second rate bubbles too.
random pug? That set up is a complete waste, and I'd have changed over to DPS to help compensate for the MISERABLE DPS that group set up provides.