Before you -1 me, give me a second to explain why I want it removed.
The thing with your teamate's banners being shown as opposed to the enemy banners is that you know their position more precicely and you are able to communicate better with them...it is also very good at actually seeing who the fuck is an ally.
However, the only thing showing the enemy's banner does is remove a part of the game, namely, sneaking and strategizing. Yes, hiding and trying semi-ambushes are fun. This completely removes it. No more can people conceal themselves and wait until the main force is over so they can attack the back. No more can you hide behind a rock waiting for the enemy to pass so you can strike.
The old system for that worked fine, why change it?