The thing is, those teams you have listed, though, are not for people that are in their 50's. If anything, it's for people that are around level 60 or higher. If you have mid game listed, and obviously you mean mid game as in after Tendo treasure is accessible, then you shouldn't be listing characters that are nearly impossible for people to have unless they're in the mid to high 60's. Or they spent money to buy seal scrolls and draw ten like they have money growing on trees.