Deathwatch is a mode to warm up before a match and practice aim but right now it's not in avery good state imo. Here is some things I would change:

Mute the footsteps sound: this would encourage running through the map with confidence that there are no campers expecting you because the noise you make.

Instant respawn: I really don't know why you have to wait 2 second to spawn.

Make a system where everyone is using the same type of guns: just like some community ffa csgo servers where you have 2 minutes only pistol, then you have 3 minutes smgs, shotguns and marshal and then OP and rifles.