Just do like WoW does now (after using the other methods):
Monitor the damage and award the kill to the attacker that did most damage.
One could imagine getting a % of the bounty proportional to the damage done.
Actually, WoW does this only for "rare" monsters. For the run-of-the-mill mobs, the first player to hit the mob "tags" it and get the kill. This is to avoid "kill stealing", so that people can be left alone with their prey. But I don't think it would work well in Elite, as there is less drawback in "tagging" many opponents (in Wow they get really after you and this can be tricky)
I voted "yes" to revise in this direction, not to revert to the previous sitaution taht is much worse in my opinion.
Monitor the damage and award the kill to the attacker that did most damage.
One could imagine getting a % of the bounty proportional to the damage done.
Actually, WoW does this only for "rare" monsters. For the run-of-the-mill mobs, the first player to hit the mob "tags" it and get the kill. This is to avoid "kill stealing", so that people can be left alone with their prey. But I don't think it would work well in Elite, as there is less drawback in "tagging" many opponents (in Wow they get really after you and this can be tricky)
I voted "yes" to revise in this direction, not to revert to the previous sitaution taht is much worse in my opinion.