Reduced energy cost synergy

Neotwism

Any chance we could get a synergy on a champ that reduces energy cost? That way we would have an incentive to rank up maybe older champs to use for questing. I know if lets say deadpool had a synergy with oldman logan that cuts energy cost in half i would want to rank them both up to use. It would save alot of units buying energy refills and make some obsolete champs somewhat useful. I just used those champs as an example. I dont care what champs this could be applied to What does everyone else think?