Would be nice to see an interesting mode other than Battle. However, if you did Domination style flags, you'd be giving an advantage to ranged. Once a flag is captured, they would just camp it. Cavalry is awful while still and an easy target. Meanwhile, anyone without a shield will be near useless for capturing flags. Pikes would also keep a game of keep away on the flags, it would be rough.
What about a team death match mode? You could have tickets and each death is penalized with a spawn timer more heavily than the round itself. That way you can still have dynamic spawns, where you have to spawn within a certain proximity to friendlies and outside of a certain proximity to enemies.