PvP fights have no output in goodies, just some tactical experience with 25th level dynos.
What if you receive some % DNA of your friend-opponent dynos?
The math could be based on bites (more hurt to opponent dyno - more DNA of it you receive).
Or more simple: you won fight, you get 0,5-1% DNA from the fallen dyno HP.
What do you think?
Right now for me PvP battles not so interesting.