It would be kinda interesting, but what about the battlefields then? Those would be hard to get to work with this experience scheme. I guess you could award experience when you leave the BF but that would just be annoying for the player I think since the purpose of the BF is to level up until you're strong enough and this way you'll have no idea how much exactly you've gotten stronger while on the BF... not until you actually leave that is.
- Telemachos