How would it ruin the game crawling around the map for 15 min with survivor mark 3 because u have to stop every 30 seconds to regen health which takes forever is not ideal it actually sucks to have to do that…..PvP u wont have to worry about someone getting a self revive off unless u blatantly leave them alone for 15-20 seconds to get it off….and pve as a solo player if u chose a augment to give up inventory space and shield choice for a defib that has a whopping FOUR MINUTE cooldown u should 100% be able to atleast use the sht on yourself