Killcam should be removed completely.
It simply doesn't fit into RO's way of gameplay and it makes whole game itself more Run N Gun.
The definition camping seems to be quite misunderstood. Caming is by definition a player which stay put at a strategic location rather than engaging in CQC. This is neither stupid or bad. COD is all about CQC combat, with quickscoping, perks, autohealing, twitchy moves, and rage agianst any form of tactical thinking. RO is quite diffrence and the game mechanic is diffrent and the whole way of gameplay is diffrent.
Killcam in RO simple makes the the class rifleman, sniper, anti tank personell, team leader, gunner, and even tank commanders role more or less absolutely useless. Because the role for a rifleman, for instance, is not neccessary to engage in CQB. It's to keep distance. The sniper's role is not to engage in CQB either - It's to stay put far away in order to take out vital targets. Because the most effective way for anti tank personell, for instance, is to hide and wait for incoming tanks.
Not only that, but it also punish players that doesn't run for their objectives, and it will make any form of defensive lines suffer since the enemy will get an idea exactly where your teammates are.
For those of you that get frustated because you don't know where the bullet that blew your head off came from - well, blame yourself and adapt or go and play 85% the other games out there that litteraly plays the game for you. But don't try to make this game into another mainstream game shooter, and apart of the 85% just because of your insuffient skills. This game is and should be kept for a niche audience - that rarely can choose what to play, because games like RO rarely exist.
Therefore, I suggest: Remove killcam completely.