Just before the D&D Next playtest started I had this inexplicable hope that 4E's healing surges would be carried forward but be transformed into heroic surges that could be traded in for healing, action points, and powers. Didn't happen. But I still really like the idea.
That is exactly what we did (and called them) in 4e. We carried the general idea into 5e, but it took us a while to tweak it. We are even starting to bring in powers from 4e into our 5e game. An encounter power cost 1HD a daily power cost 2 HD.Just before the D&D Next playtest started I had this inexplicable hope that 4E's healing surges would be carried forward but be transformed into heroic surges that could be traded in for healing, action points, and powers. Didn't happen. But I still really like the idea.