A free MMO with friendly fire really brings out the trolls. I don't know if it should be 100% of damage reflected back to you, or 50%. Thought I think it's important that it's not 100% if you're in a vehicle .
No, because most friendly fire occurs when people run (or worse, warp) in front of you whilst you are firing. The vast majroity of the time it is actually the person being shots fault.