I just think that the battle mode (team deathmatch) should be replaced with something else being the standard gamemode of cRPG next to siege.
Battle mode is won by killing the enemy team, so the ultimative goal is killing, which is bad for gameplay, I think. A reason why rageball is so popular is that killing doesn't matter so much, I guess.
I would prefer a system where you need to capture and hold certain places on the map, forcing everyone to play in a team instead of simply relying on killing the enemy before he kills you.
How about a map with three flag points, that work exactly like the master of the field flags. Every flag point serves as spawn point as well, and offers a certain amount of respawns. (Note that the initial spawns at the beginning og the round are NOT the flag points!). Depending on which team is currently the owner, killed players can respawn after a few seconds again, they can choose at which flag point before spawning.
If the flag point changes the owner, your team respawns get automatically reduced by the amounts of respawns left of that flag point. You can conquer it back, but you will get it back only with less spawn points than before, because the enemy will have used some.
This leads to the interesting situation, that you actually want to take the flag point without killing too many enemies, because once conquered the flag point becomes useless, besides the general purpose of winning a map if you own all flag points at a time or no enemies are left any more. (Killing lonely dismounted cavalrymen or poor peasants would be contraproductive, if the enemy has flag points with a lot of respawns left)
Such a gamemode would bring the benefit of splitting up those big infantry mobs, and teamplay would become crucial.
What do you think? I the flag points are placed along the middle line between the two teams you would still have an open battle, but there would be a left flank, a center and a right flank, which requires more teamplay than the usual battles with a big center and a few skirmishes at the flanks.