The big problem is , that carrying a flag fucks up the view big time ... i believe this is the only reason, why flags arent used alot more commonly, and i already made some suggestion requests for changing it a while back ...
On the other hand ... giving some drawback to a flagcarrier might have been done on purpose for immersion reasons, since holding a banner irl would certainly influence your fighting ability as well. I mean , this isnt a scifi shooter, where HUD augmented display of locations or objects is something neatly fitting in the context ... design-wise, the current batallion flag system is already pretty strange.
Im actually not very certain about what to make of it. On the one hand, i want support for tactical play ... i would say , fuck it, lets add some HUD support . On the other hand, it could fuck up immersion and other design aspects ...
Perhaps , there is another sollution somewhere out there, which can satisfy both aspects in a sound way. Like in M:BG suggestions, where there was this idea to make armor-attached team indicators instead of bubbles over the head ... if there was a nice immersive idea for it , i would certainly vote for it over a HUD indicator version ...
edit: just read this suggestion post :
http://forum.melee.org/suggestions-corner/strat-battle-commanders-should-be-forced-to-wear-different-armor/msg893455/#msg893455which would actually not be the worst sollution O_o
But no Aura pls or, enemy commander indication other than different armor ...