The player being killed in tallar is always:
http://warofdragons.com/user_info.php?nick=Invisible
Worst case senario is the game counts that as a limited character. Most likely it will not associate Invisible to the individual player counter. Other mixed race battlefields like meridians also have similar anonymous structures.
This rule is more likely to impact the race battlefields by limiting hooliganism that so many have complained about. That would be stuff like base camping in CC, hunting the weakest repeatedly in temple and forcing players to ress in arena instead of dropping the sphere to win. But since those battlefields do not happen as often then the basic dynamics won't change as much.
However all this is speculation until we actually see it in action.