The ability to add New/Custom commands that affect certain ConVars, with an accompanying Description. Might be useful for changing things in particular Gamemodes like TTT, Prop Hunt, and such.

So maybe a ConVar that adds new commands like, 'twitchcommand suddendeath "Players Health will be reduced to 10HP"'

Some possible commands that could be made using it:

!suddendeath (Players Health will be reduced to 10HP), could possibly use the ULX Command 'ulx hp <ply> <amt>' in a loop to apply this command to all players on the server.

!loudmouth (Props will continually taunt for 10 seconds), usable in Prop Hunt

Just some ideas, don't know if they're possible, but it might be fun to have some customizability with our commands!