I think the best possible scenario would be for Disney to get Super, but only for a 2-year deal a la Naruto Shippuden, and for the deal to not affect Kai on Toonami! Then we could finish Kai over the next 1.5 years with the dub-premiere Buu saga, and later (like in 2019) have Super!
Alternatively, maybe CN could air Super first, then throw it to Toonami once Toonami is done with the Buu saga? Just as long as freaking NickToons doesn't get it, we're good.
Also relevant: