Can I add to this, the ability to view your own flag/banner during combat?
I've definitely been playing with new teams that I forgot what banner I was using, and it can be helpful to calculate if a single gem match can give you full mana in a match with this info.
I feel like it's pretty clear already - it lists all possible traitstones on the explore overview screen. Is that not sufficient? What exactly could the devs do for this to make it even clearer?