This basically sounds like (to me), "I am not active anymore, and I miss the old days" which I'm sure other members would feel the same way before the days HDM even existed, or whatever else happened way back then.
MGM isn't dead. The forums are pretty dim though.
Since it's not obvious, and that I feel this may be helpful, here is the general activity status outside of playing the game:
*The
#macgamingmods IRC channel is highly active, which is our general hub.
*The halomd chatroom also gains some traction, which is mostly for discussing modding, playing halo, and troubleshooting. (You can join via adium or ichat/messages if you want, though bug me on IRC to do that...)
*The
OpenCarnage community which members from both communities have gotten to know each other.
I am no longer active to Halo or MGM, and don't guarantee a response on the forums or through email. I will however linger around the discord room for general chatting. It's been fun!