honestly, the way i see progression is to beef up one element as much as possible, then spread out to others...


you still have your strongest element if things get rough, but if you can build more teams up, that's more elemental advantage at your disposal, cause some attack hit pretty damn hard and you don't want to take one-shot damage if the "advantage" team could survive it at the same amount of HP...

but like i said before, clearing content is top priority, getting stronger from there is up to you. given how this game works anyway, if you can do it, there's likely a way to do it better, even if it involves digging up more break limits or even copies of stuff you have.