The increase in UCL participants means nothing to Madrid. It is about quantity, not quality. The number of teams participating in the UCL will not boost the quality from the participants, right? I am still convinced Real Madrid is still winning the competition.
It will create more opportunities to smaller leagues and smaller clubs but the ultimate beneficial entity is UEFA. They will receive a lot of more income from a bigger Champions League with more matches and more television rights from more countries.
Despite the fact that there would be so many participants competing for UCL. Real Madrid is the most favorite club to win the competition. I am not doubting it.
Real Madrid and other big clubs will receive more money too but they will have to cope with another challenge, more matches mean more risk of body exhaustion and injuries on their star players. In very last months of each season, their star players will have bigger risk of injuries and miss most important matches in a season. This potentially causes some big problems with clubs that unluckily get some player injuries.
There is an additional slot for the Serie A and Bundesliga.
This will not affect the fact that a weak club finishing in fifth place will have a chance to participate in the UCL. This will not have a significant impact on the result as the winner will be dermined by the quality of clubs. I remember some leagues sent a lot of candidates last season but real madrid was winning the competition.
Additional slots for two best leagues are good enough because these clubs have good quality too. In Premier League, if Chelsea or Liverpool miss Champions League, it's bad for them and for Champions League too. If Premier League completes a season as one of two best leagues, a strong club that ends the league will be able to join Champions League next season.
It is good if the fifth club has good performances but if the fifth club has many problems like Manchester United, their appearance in Champions League with that special extra slot won't help to increase quality of Champions League.