Splitting the queues (which, by the way, would make queue times longer for everyone) for what? So .5% of dungeon runs would go by 1-2% faster? Most dungeon runs are already 15 minutes at most and 1/5 of that is time spent running, anyway. There are probably way more runs where people don't even use their party buffs than runs with duplicate buffs. Just make roulette parties in PF if you're willing to wait longer.

It'd be one thing if this were JP and we did Savage in DF but this is a ridiculous idea.