Why do you keep changing everything, bungie? It's getting to be like George Lucas changing the the original Star Wars Trilogy. It was completely unnessecary and if half of your fans are going to disagree with it anyway, why do it?
Halo 3 matchmaking has definitely gone way down hill since the game was released a year ago. The BR start change, adding Covies in BTB, adding Heavy in BTB (why even get in a vehicle if there are 6 lasers on the map?), constant decreased weighting on objective games in playlists like doubles and lone wolves, changing the map layouts for absolutely no reason (see Narrows {why are the stickies so much farther back?} and Snowbound), and changing the actual physical things in maps that I thought could not possibly be ruined, like removing sheild doors in Snowbound and Epitaph.
There were also things that I thought should've been carried over from Halo 2, like 3 team multiteam and fiesta, and other changes. Changing what Halo 3 actually plays like in a lot of it's favorite maps and playlists is just a poor decision though. There are many other postive complimentry things that could be being changed right now, but you choose to fiddle with the aspects of the game that we already loved, or at the very least learned to deal with. Bad decision guys.