I think a bigger drawback for MLB is the size of the Vegas TV market. It's smaller than Milwaukee.
https://www.stationindex.com/tv/tv-markets
Surprisingly, it's also smaller than Grand Rapids/Kalamazoo/Battle Creek
I think a Vegas baseball team will get plenty of out of town fans like the Raiders do. Probably a good draw for the city in the summer when there might be less tourism.
As for a minor league team + a major league team....I think it makes sense if this was A or A+ ball but AAA seems odd.
He used to get ticked when guys hit homers off him. Now he gets ticked when guys don't react correctly to foul balls:
https://twitter.com/js9inningsmedia/status/1649090559368216591?s=20