Originally Posted by
Greyloins
It rewards gear that is, for most classes, barely better, a sidegrade, or plain inferior to T4 gear. That's hardly "very powerful gear". The set bonuses are very good for dps classes, and meh for everyone else.
T5 was the first new raid in ages, and should have revitalized the raiding guilds... instead it killed guilds by being too difficult, with Vistrix proving a huge barrier for most guilds. At least 24 guilds killed Yakhmar and relatively quickly at that, but only 14 killed Vistrix, and for many it took very long months of progression to get there, and I expect some of those guilds can't consistently kill it even now.
The high difficulty isn't as big a problem in T6 because everyone will get to see the raid in the content finder version, and FC was quick to nerf the very hard fights (unicorns and Lotus Domination)