I don't know why Blizzard didn't implement this yet. PVP should reward gold. It's simply unfair for PvP'ers who don't have money for gems/enchants/repairs or just random gold. I think it should be something like this:
First Random BG of the day: 100g. Loss : 35g.
Normal Random BG: 50g. Loss:20g.
Insignia's should now reward: 1-5g.
Arena win: 35g Loss: 0 ( to avoid abuse )
Rated BG: 100g per win. 50g per loss.
Anyone agree/disagree? or some idea's to improve.