Idea... A high tier prestige item, that would automatically refresh adjacent fuel cells. It would cost the build some efficiency because it uses a slot that could be a reflector, but allows end-game players to idle easily.
A very cool game, I like it. But there are problems, and I know it's and alpha. Healers heal only sometimes and usually targets which don't need it, can't sort or move around heroes on the list (yet), sometimes rangers just leave the group to the other side of the map and die to some random enemy... Just some things I wanted to note. BUT, I wanted to suggest that (if it isn't already on a to-do list) you should add a way to customize the base with cosmetic items and such. I just want to build my own little base with all kinds of neat items, like trophies from completed raids or something. x3
 "Reactor Incremental"){kind=icon}
 "Idle Raiders"){kind=icon}