Encounter powers always seems a little mechanically off for me, particularly for the non-casters.
For a wizard, the idea that he has to rest for a few minutes and reprepare a simple spell makes sense. There's an internal logic to that.
But not for marshal characters. The following has no internal logic:
I have three encounter maneuvers. I can use each one time before resting, but I can't use the same one more than once. Apparently, each one makes me tired in a very specific way that doesn't interfere with my ability to do something else.
Now, instead, if I had a three points of stamina, and each encounter power used one, but I could perform the same encounter multiple times, that would make more sense.
So, it's not that encounter based resources are a problem. They can be done sensibly. It's just that they need to follow an internal logic. The limitations should be based on something in the setting and narrative.