+1For the love of god, if it bothers all those guilds so much, then they can have their raid team... now stay with me here, this is where it gets complicated... IGNORE the extra item levels.
I know this sounds complex, but I've thankfully completed an undergrad degree in comp science, and have done all the calculations on this one. According to my results, choosing to ignore the newly added item levels will result in the game's difficulty remaining comparable to what it is today.
Upon further calculation, I've also determined that screenshots of your gear at the time of your Garrosh kill would be acceptable proof in disproving anyone accusing your team of taking advantage of the nerf. An additional conclusion reached indicates that no one outside of your group will care when you actually achieved your goals, as this content is well over 6 months old already. So ignoring the item levels will still provide you with the same amount of satisfaction.
My testing has reached one final conclusion. Should this be the issue that destroys your guild, as hyperbolically stated up above, it's stability was questionable to begin with, and most likely would not have survived the transition into Warlords to begin with.
No... no... no need to thank me. I do what I do for the good of the community, not for praise or accolades. In lieu of showering me with gold in game for solving your terrible crisis, I urge your raid team to send any and all donations to the Children's Week Scholastic Fund.
Good luck, and god speed.
Thread Over.