Health, mana, balance, equilibrium, endurance bars. Those things I would love to see from it. Also in/out up/down on the navigation bit.
These are highly dependent on your particular MU*. :)
If your world supports MXP, then this is captured as part of the MXP idea. Or did you have another mechanism in mind here?
I play Achaea and that we could set it up by only going hunting and making it to listen for damage, or use. That way we can see how much it used out of all.