The way I played it was:4 is 4-6
5 is 5-6
6 is 6
Roll 1d6 at the beginning of creature's action. If it comes up a 6, everything is recharged at once.
Monster acts.
Etc.
The group found it interesting. I was hamming it up a little when I ran, saying things like: "You get the feeling that the monster has a 33.33% chance of being able to do that again this turn ... *roll* ... and it does."
I actually found it more entertaining than tracking dailies and the like for the creatures.
However a LOT goes to the dice in this system. A lot of pure random 50/50 rolls. Death, Saves, Recharges. But it offers entertaining possibilities. Somebody used a persistent daily on a Hobgoblin and triggered their immediate save ability and there were boos from the audience, but people did find it interesting that they had already built in some special abilities tied to the new save mechanic, making it less than the flat percentile. Just not as tied to level as, say, level-based abilities.
--fje
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