Ok so first the typical 'I searched for this but didnt find it and sorry if by chance it is a repost'
While this probably can count as "common sense," I didnt think of it prior to now, nor did anyone else I was with.
Last night we were on Twins, and per usual, our rogue switches over to his spirit priest for our buffs. This priest is just there for buffs and is our '26th' raider. Anyhow, any time we wiped (new fights ftw), he switched from his rogue to the priest after they despawned, logged in, rezzed some rezzers, and we were off again. Granted soul stones and the like are easier, but this is 100% wipe protection for the raid. We use him every attempt, so there is no concern for him to idle and be booted from the area. This saved our butts from doing the gauntlet repeatedly.
Hope this is helpful.