As far as i know, there are no alliance points earned for resurecting someone in AvA?

I think it should be considered... at the moment, there is no incentive to rez someone outside your own group (it costs a soul gem), which is often frustrating for those who just want to play a quick session without a group or generally enjoy playing solo.

What's yur opinion?

Rewarding people for being team players is always a good idea!

I feel that there should be a reward of some kind, especially since it cost a soul gem.

Wasting a soul gem on a player who may or may not even be competent is risk/reward as is. How do I know whether the person I am resurrecting will have any influence in a PvP battle? He might get back up, run into the fray, and immediately die again. Or maybe he runs away and leaves the others. In the meantime, I just wasted a soul gem.

Getting rewarded for this would at least give a purpose for doing so, rather than a shake of the dice.

The reward should be big enough that even complete strangers would fight each other for the luxury of reviving you.