Do something about Kill farming
Some lame players are using the revive mechanichs to farm kills. That's pretty much a negative game experience, since they camp your corpse just to kill as soon as you're revived, for another easy kill.
I would recommend to give a revived player a few seconds of invulnerability, and killing the same player more than once should count just 1 kill at the end of the day, also getting killed more than once by the same player should count as 1 death. This is a game, it can be hardcore but it should be fun.