Just 2 quick things
1. +X% health after combat
For love of sirona, change this to something else. Currently computer will lose from tens to hundreds units versus one unit with cannibalize. I can't even imagine what bit buffer heron units with bigger effect would do . Or even worse ,i unit with both cannibalize and the eternal defender promotion both. For the bloodrage promotion it would be okay mayhap, they get -1Defensive anyway. But it would be even better if it would be offensive heal only, if that is doable.
2. Grigori
These guys get 10+ heroes or so each game, and these promos make them quite/somewhat more powerful. Will they completly dominate the world after this? i have no clue .
more detailed analysis after you post more stuff and i sober up.
Also , i fully support this ,i always felt that heroes in FFH//// were just not heroic or special enough. Yay for this.