Why do skills use mana? Seems odd that they would operate on the same source as spells.
The idea: Make skills use movement and not mana.
In this idea, it is somewhat critical to think of movement in terms of a stat more exactly resembling "Stamina" or the physical counterpart to magic resource.
This would be applied to all skills that use physical energy. It is somewhat exhausting to bash or bodyslam someone over and over.
Further along this line of though and the idea of stamina is regular combat. Each round of combat might serve well to drain a small amount of movement(stamina). Something like 1 or 2 points per round.
Now, put modifiers on the stat that make melee races more unique. For instance, with high DEX, you manage to perform combat as well as certain skills using less energy. Conversely, if you have high strength, you would perform them with a large exertion of strength, as well as at a high cost to your stamina. Elf warrior with advantages? Yes, I know, it would be something to see.
I post the very rough idea of this. The exact systems involved, and the balancing with it remain in my mind. Needless to say that it would make room for strong abilities, but to use them overtly carries with it the risk of exhausting yourself (as should be the idea with a fighter).
Essentially the same pool of energy that propels your feet will propel your arms, and your body.
