Tell Me I'm A Screwed Up Mess
War Cry - Increases entire team's attack by 10%.
I really can't think of anything else that hasn't been said before. Doubling attack is "symmetrical", except that gives Braviary a 690 attack stat from the get go (assuming 31 Atk IVs, 252 Atk EVs, and boosting nature). o.o Perhaps a free +1 to speed would be nice like bacon said. Apart from that, I'd look into something that fits Braviary's errr...bravery and patriotism.