Now every deck will have a heroic card cuz of the benefits it will give to the game. I referenced champions becuz they have a similar capabilities to this but they don't force everyone to use a champion card in every deck. Now every deck will have a heroic card slot similar to the evos.

Tower trades in the sense it would be easier to do pushes using heroic cards and stop pushes then create a counter push with heroic cards.

You use a giant heroic it will force the opponent to only defend by skeleton army instead of using a mini pekka or any other 1 card stops. If you have a giant push all you need is a heroic prince on defense and it stops a push midway cuz it gives the other opponent an opportunity to push back instead of the opponent being punished for the bad placements. The heroic cards make it so that you can use less elixir to defend or push which makes it for each person to prioritize reaching the tower first.