MLB would be well served to figure out who is leaking all these ideas. I have no doubt that there are tons of ideas being thrown out - some good, some not so much. Having someone walk out and tell the media what they are is just not a good look. MLB then spends their time dealing with the fallout of half-baked brainstorming ideas rather than real planning.
As for the idea in this thread, I am all for whatever gets us baseball and that baseball isn't putting anyone in danger. I think there are tons of questions about how to handle records, stats, etc., but that's just part of it.
The main thing I want to know is how sequestered players would be in this setup. The biggest pushback to the idea about all games in Phoenix had to do with players being away from their families for four plus months. I am curious if the idea in the OP would or would not impact that situation.