Time to take on the current hot topic in WoW circles: the new 25-man raid cap.
Unsurprisingly, I think this is a good idea. I have always maintained that the single hardest thing about raiding is the transition from levelling guild to raiding guild. Reducing the number of 60s required is a great help for a new guild to achieve critical mass. I think this change will go a long way to seeing more people trying out the raiding scene, and I think that it is a good thing.
Raiding is fun, and I would love to see more players get a chance to realize that.
Secondly, I don't think the current raiding ecosystem is healthy. Maybe I've just been unlucky, but it doesn't seem like raiding guilds are particularly stable, especially ones that are not on the top tier. There's been some research that beyond 50 people, guild cohesion drops dramatically. I think this is true. Smaller guilds are more tightly knit. Even the top tier guilds seem to be constantly recruiting.
Also, this division into raiding guild and levelling guild is not healthy either. When I levelled my warlock, I deliberately turned down guild invites. I wanted to raid, and I didn't want to join a guild and then leave them at 60 for a raiding guild. Realistically though--unless I was incredibly lucky--that is probably what I would have to do. I think a game that forces this choice on people is flawed. Ideally, I should be able to join a guild, level with them, and move into raiding together. With 40-man raids, I do not think this is truely possible.
However, there is a price to pay for this change, and I don't think that we should make light of it. The current raiding guilds are going to have to change, and maybe make some painful decisions. And I do feel bad for them. It will really suck to have to reduce your raiding force by 15 members, or attempt to juggle 2 raids. Hopefully, guild churn during the expansion--either attrition while levelling or older players coming back or people rolling Blood Elves/Draenai--will lessen the magnitude of change needed.
In my view, though, the new cap will result in many more guilds and players attempting and using raid content, and so the price is worth paying.