Need some information about Murder gamemode/server

Hello y'all, I'm Garry's mod player from Russia. My favorite game mode is Murder and I was curator of most popular russian murder server GB64 server until it closed. So now I'm helping one new russian murder server in developing, in common now we have just vanila and trying to add some features.
I have a question for someone who knows, in general I want to know some addons/scripts which will help to make murder better, it can be HUDs, game rounds, and anything else
and I'm rly sorry for my English =)
much thanks!

Hey, i don't think it's possible to add HUD, but you may use other weapons (M9K, CW, etc...)