If they could put animosity aside, I would like to see a tour of Van Halen, with both DLR and Hagar. They could each sing their respective songs, and don't have the strain on their voices after doing a 3 hour show. DLR could open one night, and close the next. That would be huge! It could fill football stadiums. Does anybody do concerts in football stadiums anymore?
They would need a football stadium for the necessary distance between dressing rooms - one for Dave, far away from the one for Sammy, one for Michael, all on the other side from the ones for Eddie and Alex.
Having said that, I wish Van Hagar the best.