i think dark/fire is good glass canon build, satan+susanoo+ares+beelze until ur weapons setup are done, meaning all dark atk skill then swap ares out maybe? and if u met water element, u can always swap are with ur tsuki so a full dark team~

forming a team for every element doesn't sound viable to me....due to the slots limitation... unless u spend jewels to expand.... sooner or later new batch hime will show up and a stronger version...i will keep jewels try my luck to get a hand on them for an upgrades