Of course it's hard to find a raider who doesn't agree and I'm certainly in that camp too. However, being in "race to world last" type of guild is interesting - by the time we get to the bosses, we often find that many of the Echo/Liquid WA packs are just too much/too heavy and there's a way to do the fights without loading all of the 750 auras they used.
Of course some auras are mandatory because there's no way you can humanly make assignment calls fast enough.