I couldn’t see them instituting a heavy drawback for such a tool, if any at all. It’s not an instant guarantee you’ll get a fired up move, you have to put yourself in a vulnerable state to achieve it which you wouldn’t want to do at close range, and it would be situational in it’s use. It’s got a few caveats to its use, but used correctly, it brings out that fired up state just a tad quicker. Nothing huge or shifting in his gameplay, not like how his inferno move was changed, or how he can burnout off of throws.
I think it could be reasonably accommodated without requiring much effort in balancing his gameplan. If it produced an instant fired up, then there would have to be big shifts in his gameplan, but that’s not what I’m proposing.