Player energy increases 5% every 5 minutes. It doesnt take too long to refill at all so I am not sure if they will have an option for that. 

I know, but I like to focus on certain aspects of a game invididually, so having to wait with the wild horses thing doesn't really allow me to play in the ways I most like to. Perhaps the ability to refill your energy bar completely for a certain amount of bits or ingots? It would just allow for a different play dynamic with that aspect of the game, which ultimately will just have more people playing longer :))