Faction synergy?
Just an idea: what if the champions got bonus stats or special abilities when teamed up with their faction mates? I could see some interesting comps if there was a faction synergy, something of a cross between faction guardians and partnering champions.
I thought they could be faction theme specific (HP Burn for Demonspawn, Speed for Dark Elves, Accuracy for High Elves etc.) but I'm afraid there would be a lot of complaints because some bonuses will be found more preferable than others.
What do you think?