gameplay takes priority over realism
tank only giving 5 dmg by running over marines is for gameplay reasons, FF damage has been lowered overall some time ago for purely gameplay reasons,not because marines are suddenly bulletproof hulk abominations
seeing only 7 tiles far is a gameplay decision done by practically all servers (HRP and alike)
defibs resurrecting is a gameplay decision
we CAS and OB Prison and CORSAT all the time and nobody dies from lack of oxygen due to the bombs making holes on the station's roofs that lead to the vacuum of space, all for gameplay reasons.
Intentionally being run over by the tank is LRP because no sane man would do this, just because it deals only 5 damage to you doesn't mean you can intentionally run yourself over.
Just like how you being shot by another marine isn't as bad anymore doesn't mean it's okay to ask "HEY SHOOT ME PLEASE"
the CM universe has the same physics and laws of nature as our universe,lore wise a direct hit SADAR will gib you,lore wise you will die from being one tap eviscated by a ravager,lore wise getting shot by a fellow marine would be the same as getting shot by CLF with the same gun. Our server doesn't show this because gameplay takes priority over realism so we can have FUN
Soldier said to move on,take his advice.