I'm alright with the universal DH (though I don't prefer it - but make the damn decision already), and I like the expanded playoff.
No to the 7-inning double-header & Texas tiebreaker. Those do nothing improve the game, or protect against potential virus exposure. They only shorten the games.
These guys get paid a healthy sum to play a game - challeges arise during the season like fatigue, injuries, etc. Deal with it. That's what you're paid to do.
If they want to do expanded rosters, or maybe some kind of tweaking to the 'option' rules, I'd be 100% in favor.