[Ave]

Either really force the alliances to small pieces:
Any new group forming could join more ease having no need to make miracles in finding people and recruits. Basicly anyone could go and start a small alliance based on friends or so. Basicly you could try to reach new alliances and groups moving in from other games like this.

Or let them recruit and balance as they wish and as they can handle. Pretty much as it is now.

Any option in between only harms the game and lowers the amount of players participating: As Light mentioned the kicked persons would perhaps find a new home from smaller alliances, but as well they can be skipping the round as whole. Also its usually the same few people with most contacts to recruit people to the game... dont think such persons would recruit if the recruits would have to be dumped to other alliances.

Also gotta agree to mz post about this case. There are so many other ways how u can support battle and politic play.