I know not every has access to The Athletic (but you should):
https://theathletic.com/1630609/2020/02/25/champions-league-leicester-sheffutd-uefa-celtic-ajax/?source=shared-article
https://theathletic.com/1630609/2020/02/25/champions-league-leicester-sheffutd-uefa-celtic-ajax/?source=shared-article
In a document, which The Athletic has seen, Danish champions FC Copenhagen have proposed an idea that would let the top four leagues (Spain, England, Germany and Italy) keep their four Champions League slots but not necessarily their free passes into the group phase.
The plan, which is understood to have support from regular Champions League qualifying-round participants Ajax and Celtic, would see every club that has qualified for the competition ranked from one to 79 in an “entry list” based on their results in Europe over the 10 previous seasons.
More at link, I can't quote it all.If used this season, all four of the Premier League’s entrants would still have gone straight into the group stage, as they did under the current system. Galatasaray and Genk, however, would have had to come through two rounds of qualifying, Lille and Lokomotiv Moscow three rounds and RB Leipzig and Atalanta, who lead Valencia 4-1 after the first leg of their last-16 contest, would have started in the first round.
This season’s big winners from the “Copenhagen Access Model” would have been Ajax, Dynamo Kiev, Olympiakos, Porto and PSV Eindhoven, all of whom would have gone straight into the group stage as opposed to the qualifying rounds, from which only Ajax and Olympiakos ended up progressing.
But, for example, if Leicester City, Sheffield United or Wolverhampton Wanderers finished in the top four (or five, depending on what happens with Manchester City and FFP) of the Premier League, they could expect to be placed in either the first or second round of Champions League qualifying next summer — the point at which champions and runners-up from mid-ranking leagues currently enter.