Just a suggestion, but could there be a way to make your total trimps grow exponentially along with the combat requirement? I find that building up my population takes a really long time, but then the next upgrade doubles the trimps i need to fight. So then i have to spend a lot of time building them up again. I'm not sure how this could work, maybe more mating upgrades or more house structures. But just my thoughts. Really good game tho, i really enjoy it :)
 "Endless Dream"){kind=icon}
 "Trimps Preview"){kind=icon}
 "Blackmarket"){kind=icon}
 "Holyday City"){kind=icon}