Logan:

Yes it is screwy, which is again why 20-main raiding makes more sense than 25-man.

My point about tank-officers is that the only tanks that I've ever seen that were tank-tank specced were senior officers of guilds, because they are ALWAYS going to tank, and anyone who basically isn't running a raid would never be guaranteed that main tank spot.

In a 20-man system, you'd likely have more tanks in general, and more people specced tank-tank, compared to what we have now.

People who complain about dps spots are missing the boat. DPS spots are by far the easiest to fill in 25-man raiding, and it's very easy to get opportunities for dps spots in even very good guilds. This is because the ratio of tanks to dps is far lower in 25man raiding. Rossi I think even talked about this before - the hardest raid spot to obtain in all of wow is a tanking position in a 25-man raid.

"Unfortunately, the reality is that 5 up to 10 scales well, and everything past that doesn't."

Agreed, but 25-man exacerbates the scaling far worse than 20-man raids do. The ratio stays more even in 20mans. Also, had blizzard gone with a 10-20 model, they could have built the raids from the ground up to require the same ratio of tanks from the start.

The other point is one that many others have made, which is that a guild with two solid 10man teams can scale up to 20man much easier than they can to 25man.