Um there is no death penalty so what's the issue? It is an annoyance for sure but maybe just remove friendly fire in SOL, you can't remove it from the game completely, explosions should effect everyone equally.
Wasting other peoples time? Generally making a bunch of newbies hate the game? Big issue here as it could impact subscriptions if he's doing it to brand new players.
Now all that needs to be done is have it not affect players that haven't been in combat for a short period.
O really stop whining... Its harmless fun... unless you go afk and stand still, theres hardly any chance they'll hit you in the first place... and even if they do... so what you get no after effect from it... Stop crying