Finally! People like myself who are members of smaller, more casual guilds who happen to raid and have been running Kara continuously with a few visits to ZA here and there and have never seen the inside of Gruuls, SSC or Mag due to the fact that it's rare to get 25 guildies online, never mind in a raid, will be able to see end game content! Hooray for you Blizzard!
In both my Alliance and Horde guilds we have many well geared members who are running Kara now basically for the badges. I routinely pass on drops because I have them or better and I would LOVE to see places like SSC, Mag, or Black Temple but never will because you need 25 people and the few times I've gone in as a PUG it's been pretty awful. Now in WOTLK we can raid and hopefully have a lot more in the way of choices.
I also think the jump from Kara to ZA has been a bit too much in terms of difficulty. I've long felt that we needed something slotted in between those two. I'm hoping with more content Blizzard will make the difficulty of the raids closer together so that a well geared group that routinely clears the first level raid dungeon won't find that they are wiping at every fight when they walk into the next level dungeon. I like a challenge but constant wipes and corpse runs makes for a frustrating experience.
As for the larger guilds who have been running and enjoying the 25 mans in BC..Why should that stop? They have the option of doing the same in WOTLK. Unlike when Blizzard ended the 40 man raids there's no elimination process here. They are just giving us more options and expanding things, something that I think should be applauded. Yes, the hard core raiders should have the challenge of doing the kind of raiding that they enjoy but it's ABOUT TIME that those of us with lives that include work, family, friends, etc, as well as WoW should have the opportunity to engage in high end raiding content too.
I play WoW at least 5 nights a week and feel I should be seeing Black Temple at this point. Many in my guild feel the same as I do but what keeps us out is the fact that you need 25 people for so many of the end game raids. The result is that I've seen many good people leave our guild to go raid with the larger raid guild in the 25 mans or settle for running Kara week after week and hoping they can get enough badges to upgrade gear in that manner. Now we can keep good people in our guild and enjoy end game raid content to the fullest.
Kudos to you Blizzard!