I've released an update for GMDM Redux which in short fixes a lot of things, adds a Soul Collector gametype as well as small other things. You can grab the update here.
The full list of changes are:
No more dedi crashes
Soul collector gamemode
Kill icons are right aligned and support headshots
"You were killed by"/"You killed" messages with Steam avatar
Client side cvars for gib effects (cl_gmdm_)
You can now disable gibbing server side
Players now taunt when they kill and there's random pain sounds (thanks Rambo_6).