Well, it was about time for a new suggestion I think.
I just watched the newest DBU video out and I think he had an incredible idea in it. He has these different stances which can boost one of four key areas of your character while decreasing the others. Eg. if you go into a Strength stance your Defense decreases but you punch harder, if you go into Agility stance your Strength and Defense decreases but you hit/dodge/move faster etc.
Watch here at around 3:50 mark:
How well do you think this would play with the key aspect of ESF which is character balancing? Would you implement it?