Lately, my guild has taken up a tactic which I find distasteful, but is leading to success. So far it's been used sparingly, but because it is successful, the leadership's aversion to the tactic is eroding. I fear we'll start resorting to it earlier and earlier in the next tier.
Basically, on a difficult boss, when we're fairly close to a first kill but are having trouble closing out that last 10%, the raid lead will start asking the lowest DPS people to step out. Because normal and heroic raids scale now, the average DPS of the raid increases while the mobs get weaker. We got our first kills of Heroic Botanist and Heroic Gul'dan this way.
I don't approve of this tactic. To me, a raid team is a team, and you win or lose with that team as a whole. I'm perfectly fine with having minimum requirements to join the team, but once you're in, you're in.
If we didn't use this tactic, we would progress a little slower, true. Maybe we would have killed Botanist and Gul'dan a week later. But we have plenty of time.
I also think we're using this tactic as a shortcut instead of tightening up our strategy and positioning. We aren't a Mythic guild, and thus our basic handling of mechanics is not as good as it could be.
But it's really hard to argue with success. The raid leadership will point out that they only do this when it's "necessary", after we've already wiped for a couple days and no one objects in raid. But no one really want to be the person holding back the group, either. And it's hard to say that yes, we should spend one or two extra weeks wiping when we could be progressing and working on new bosses.
But because it's successful, we're reaching for it earlier and earlier. I think we wiped on Botanist twice as much as we wiped on Gul'dan. How much will our tolerance erode in Tomb of Sargeras? One night of wiping? As soon as we have a 20% wipe?