Everything seems to be moving along steadily. My guild in The Old Republic is trying to move into Nightmare Modes. We've killed Writhing Horror on NiM, but absences have delayed attempts on Dread Guards.
The thing is that we have exactly 8 players on the team, all with solid performance and excellent attendance. This is great most of the time, as we move through content at a steady pace. But when one person is out, we fall to pieces.
I dunno, it's the same pattern I saw in WoW at this level. Progress is so good with consistent core that everyone tries for that instead of maintaining a bench. Then absences cause significant setback. I just can't convince anyone that preparing for those absences is a good idea.
But maybe I'm wrong. Maybe the increased performance from a smaller team is worth infrequent chaos around an absence.
This was also the problem with 25s and 10s. The performance gain from simply taking the 10 best and most consistent raiders was too high for many 25 guilds to ignore.