If any of the following comes across as argumentative it is not intended. I just don't know how else to say...
You bring up some valid issues but what about those teams, like Cleveland, that have a low team salary yet still put out quality. In 2024 Cleveland had the third lowest team salary yet still put quality on the field. Cleveland just does it through their farm system instead of their wallet.
Granted in that Cleveland an exception likely having the best organization in the game as to their farm system. Why should they be penalized for running a good and efficient system?

Why should Cleveland spend a bunch in the free agent market when have no real need to do so? Take Steven Kwan as an example. He came up through Cleveland's system and got gold gloves his first three seasons, even as a rookie. He even flirted with a .400 batting average for a good portion of the 2024 season. Another good example is Cleveland's pitcher Shane Bieber who also came up through Cleveland's farm system. He hasn't done much except for an MVP award in an all-star game and also getting the pitcher's version of the triple crown leading the league in wins, ERA and strikeouts. This goes along with his AL Cy Young Award.
I just don't see how it can be justified to fine/penalize a team that went to the 2024 ALCS, and the playoffs more times than not in their recent history, for not spending money they have no need to spend. By your tables Cleveland would be penalized as to falling below a minimum team salary. Of course, as is rather obvious, I am partial to Cleveland but I think my view has merit.
How about a compromise? Granted in that there are teams in both the MLB and NFL that just abuse the revenue sharing and mayhaps such teams should be penalized. As a compromise let's go with your minimum salary requirement but add an escape clause. For discussion we'll go with your minimum salary idea but add that, if the team has made the playoffs within the previous five years, they are exempt? This would strike me as a lot more reasonable than a flat pay the players this minimum or get fined. I just don't see why team ownership should be fined for doing their job better than others.
Actually Cleveland's low team salary is, at least, partially due to coaching. Tito was/is the best and Stephen Vogt is following in his steps even though his game strategies are a bit different. Cleveland tends to be a young team normally and many of the young players will happily take a little less money just to be coached by these guys as they know their game will improve and get them more money down the road. Think about how many Cleveland rookies have started games in recent years. 10 plus is not abnormal.
Mayhaps not totally relevant but I believe that the leagues need to normalize stadium ticket prices. I left Ohio in March of 1987 to go to Texas. In 1986 I paid less than $100.00 USD for season tickets at around the 35 yard line, second deck for the Browns. In 1887 The Cleveland Browns were playing in Dallas, actually Arlington, and I had every expectation of going. Found out that going to one Dallas game would have cost me more than my previous years season tickets. Needless to say but I didn't go to the game. Ever look at the ticket prices for Yankee games? For a lower middle class family they just can't go as one single ticket would be a week's pay or more. Personally I think that the main issue is that the NFL and MLB, along with other 'sports' are no longer really pure sports. They have both become just another part of the entertainment industry; no different than Hollywood.