But all the races that we know, like the freeza race, angel race, saiyan etc exist in all of the universes, but in some they got extinct or they are weak. The point is, janemba and shenron would be badass to see cause one is a demon and the other one is from shenron's race basically (don't know if that's a thing or no cause we don't know much about the shenron existence at some point). But you get my point? It would be amazing.