1. Is it possible that Diego Brando had children before he died?
I thinked this because Dio had four sons so it would be possible that Diego had son or daugter.
2. Do you think we would see Rohans, Polnareffs or Diavolos SBR counterparts?
I thinked this one because we have seen Josukes, Koichis and Kiras counterpars and we havent yet seen Polnareffs counterpart nor Diavolos.