If your in one of the "good guilds" then you already downed Cho'Gall, Sinestra, Nefarion and Al'Akir. Basically if you were ever going to do it, you would have done it by now.
These raids are soon going to be irrelevant with the Firelands raid.
They are making current raids more accessible to mediocre guilds, like mine, and making more players happy. It gives you more of a sens of accomplishment if you down current bosses in current gear. It makes players happier.
If you are in an elite guild, these bosses dont matter anymore. The elite guilds are already testing the new bosses on the ptr.
Nobody should have strong emotions towards these raid nerfs. Like I said, if you were going to do it, you would have done it by now. So whether they nerf it now, or you come back decked out in T12 gear after patch 4.2 doesn't matter.