<Snipped quote by Famotill>
Personally I'm a fan of keeping things as simple as possible in forum play. Even coin flip(s) for each action should work perfectly fine. If you are good with certain skills you may let's say gain additional chances for positive result on coin flip. Let's say you are good thief - you gain additional 2 chances of coin flip. If you are brilliant - you gain additional let's say 4 chances. Simple to the point and you avoid some potential even if not intentional godmodding.
And in other words there are tools to deal with energy users, which is good.
Agreed, I'd rather not over-complicate people, but I'd like some structure. If anyone else has ideas, please feel free to share them!