also a intresting idea for reserves is backline management
as your units move forward a backline could form like 10 spaces away from the from line units these girls could also intervene to create a safety zone for the others
the backline field wont move back but only forward so once you have moved it forward the front line girls can retreat to the safety of the girls in the back to get protected
you could even make some girls who are dedicated to backline stuff
like commander girls who spawn minion warrior girls to help protect the backline