RPG is all about damage +-?

Attack, Heal, Buff

So this eventually ± of int,float values of HP or other stats.

All these 3 elements are all and end?

Too tired, sick of, cuz almost all RPG game so far used them enough.

I am making game, but still I too make similar thing.

Is there a way to innovate this?

Make skills combos, which provide bonuses, for executing in right timing and sequence.
Implement some tactics needed. Should enough reduce the mussle memory effect.
Skills, which have paper, stone, scisor effects.