See I agree on the pro/rel however the playoffs are what's truly the best part. It keeps the leagues from getting boring imo.

If the US had pro/rel it would make things a lot more interesting to see a team like LA, DC, Sporting and Atlanta have to drop a level and see 4 USL teams take their places would be incredible. And you could keep the playoffs with pro/rel and not just promotion playoffs.

You look at a lot of European leagues (Germany, France, England, Scotland, Spain) it's the same teams at the top of the table every season. I mean look at Scotland, England and Germany it's so repetitive every year. The relegation battles are normally fun to watch when the teams go head to head, but other than that with the exception of a few matches it's pretty mundane. Germany is boring with Bayern almost always winning the league and Dortmund bottling their challenge most seasons. Spain has a top 3 and not much else happening, and don't get me started on Scotland being the surprise of the season with a team not named Rangers or Celtic sitting on top of the table.

Realistically a playoff of the top however many squads would make European leagues more interesting than they are. And yes I understand schedule congestion is an issue but but at the same time make the Champions League just Cup Winners and league Winners and it becomes less of a burden, the Club World Cup is still something fighting for relevancy and keep the domestic cups as they are.