The only way I could see that added is if the ones that had jumping properties had a GB and the ones that don't can be SS canceled, but not really both.
@FoN: You wouldn't mind a mid-crushing mid punch launcher with 111 NH damage on any weight class to be a +frame GB that can be SS canceled? Enjoy madness.
PB's can already do that bullshit lol. They can only be done once per round anyway when the health is below 50%.