survival mode

There should be a survival combat mode, where you instead of exiting from the combat after a fight you can continue to fight and if you continue to fight you get more of a chance for either a good item or more trophys. but if you die you lose trophys from the fights. This would not only add a new dimension to the game but add more strategy to it.

too much work

Like the idea, definitely. Would be a little hard to put into practice, maybe? You'd need seperated arena areas either in town or on certain tiles of the maps.

I think this needs more of an explanation before its true meaning becomes clear.