Currently my guild raids on 3 evenings. Wednesday we raid Onyxia 25 followed by TotC 25. Thursdays we run several groups for TotC 10. Sundays we run TotC 10 Heroic. TotC 10 Heroic is our progression night. We’ve taken our 25man group into TotC 25 Heroic but that was… painful. In addition if we have lots of time we sometimes take a 25 group to Ulduar to get some time in on Yogg 25, whom we still haven’t killed.
There are also unofficial raid nights, we are running one hard mode group that is doing the hard modes in Ulduar 10. That group is now at the point where more than a few members have completed the meta and we are ready to carry some other guildies to Rusted Proto-Drakes.
Soon we’ll be in Icecrown Citadel. I expect we’ll start off the raiding week with 10man ICC as a good basis for learning the encounters (and likely a less steep learning curve.) If/when we clear the 10 mans, we’ll move onto the 25 and see how we do there. What is now the Ulduar hard mode group will probably move on to try and clear ToC 10 Heroic and try to get some achievements there for doing it with as little wipes as possible.
What concerns me are the Icecrown hard modes. From what I understood the hard modes will work like those in Ulduar, at each boss you either kill it in normal or hard mode. It means that our guilds hard mode group will get locked to ICC 10man and not get to do certain hard modes. If we raid just with the hard mode group we diminish the guilds chances of clearing Icecrown. However if we raid with the guild, we diminish our chances of doing the hard modes… decisions, decisions.