I never proposed having jump as a disengage option; literally the opposite. That is how it appears to be right now in the presentation video, and I don't agree with it if that is true. So it looks like we're talking around each other and making the same point; jump shouldn't be a disengage feature. If it is allowed to be used in combat, it should provoke an attack of opportunity unless you have the disengage as a bonus action ability, like the rogue. I think it should still be allowed to be used in combat because there may be times you could get to vertical locations for height advantage that you couldn't otherwise get to. Sorry for misunderstanding your view.