LK was not on the PTR, i dont think Sind was either
I thought that was the case. I don't know if I'd go as far as to say that it lead to longer dungeon finishes for guilds as guilds got stuck on plenty of different bosses, but it seems tons of guilds beat Dragon Soul on the first week and if not defeated, they at least got 4/8. My guild only did 4 hours last week and went 6/8.
ICC while really well done i simply did not enjoy as much as Uld, i imagin TOGC burnout was the reason for that
I think Ulduar benefited from all the variety that it had. Each watcher had their own distinct looking areas. I think that helps a lot since one of the largest complaints I hear from guildies is that they simply get tired of looking various shades of a single color during each raid. ICC is was varying shades of blue and Firelands is varying shades of red. It's like playing a FPS where they seem to create each level with own a brown palette. Oh wait, that is every modern day FPS!
ToGC was what really killed WoW for me and prompted me to quit for a year.
4 different raids, all of which take place in the same room with no trash, was a little mind-numbingly boring.
It's interesting, because no one really seems to like trash, but ToC usually garners complaints about having no trash. I wonder if people really don't mind the lack of trash, but that the instance inherently feels cheap by only being in one room (until Anub'arak).
I think the new heroics are somewhat boring because of the trash. The trash may hit hard, but they don't last long. So, they end up feeling more like speed bumps than anything. In that case, I'd rather they just remove the trash and let us walk up to each boss, kill and collect loot.
Of course there's also the "retard check" trash pulls like the huge molten demon thing before Pero'tharn/Magtheridon in Well of Eternity.