A tournament would be weird but fun.
Three weeks of ST starting August 1 (July 10? Doubt it. We're just not doing things well enough or early enough).
Three weeks or so of games, all in-division. Home and home, 24-32 games depending on whether you do doubleheaders.
Tournament with 18-26 teams depending on format, byes, etc. Argument could be made for all 30 teams.
Ideally you still get a full playoff once it's down to 8 teams.
World Series at neutral site or sites.
My guess is still there won't be an NHL at all. NBA might have a better shot especially if NFL schedule is also affected (which it will be IMO, they will be a month behind on practice/exhibition schedule at the very least).