Originally Posted by
Shangalar
It's about how much practice you have. I'm also raid leading and I've played Arcane, Fire and Frost in raids - it took some getting used to to raid leading as Fire (for instance, popping Combustion in random moments because when I played Arcane something else was on that button). As Frost you just need one addon like Needtoknow to monitor your Bomb, Pet Freeze and Frozen Orb so if you prefer Frost over Arcane it should in no way be complicated to raid lead. If you want to do competitive damage as Arcane, you won't be able to raid lead unless you have a lot of experience because currently there is no rotation you can follow.
It all gets even more complicated when you try to monitor your procs to do stuff while they're up. But still, if you won't play Fire, I'd go with Frost in your case.