"what it basically does is allow you access to more voice commands in game (you could even add songs), allows you to equip more musical instruments (which are like weapons, but give a damage / armour / hp / regeneration buff to allies around you when you are playing depending on which weapon you select)"
THAT actually is a good idea... i'd love to see some wardrums / banners raise a teams morale - set that one player accepts the fact he's not able to fight but to help the team as a supporter. (could be elected like the commander). 1 drummer/team, 1 bannerdude/team. one gives +armor, the other one +damage. Wouldn't even be unrealistic. (i'm serious)
The drummer could be able to drum unique rythms. Like instead of attacking / blocking he's got left drum and right drum on his mouse.
The Bannerdude could be given bonus XP for the time holding the banner up straight. (maybe he has to balance it with mousemovement so it doesnt fall. :3
The Mongolian horde might also be a good replacer for the flag system. But maybe it would be nice if there just would be 10 bots/team added (instead of flags) that are searching for the players to kill them.
If your team manages to kill all enemy bots, your team wins.... would definately like that more than just standing at a flag watching my teams' archers shoot the last 2h of the enemy team...
To the other 29 ways to improve BG:
once again, dear corsair, i have to thank you for a good laugh
.
Edit: on a second view, i have to say that almost every single one of your ideas' got some true potential. I like your way of thinking - though i really think you should try to input those ideas in a more serious way
- pretty sure some of them would be considered.