Has anyone suggested introducing heroes that have dual affinities? An ice and holy mix for example? Or maybe adding some way to add an extra affinity to say Season 1 heroes to help them grow and progress a little stronger?
This could add an interesting dimension to the game as far as hero development goes too. Talent trees that allow you to develop both affinities or increase one affinity over another.
This could really be developed in a lot of different directions, but to start off with would at least affect game strategy in a lot of ways.