https://en.wikipedia.org/wiki/List_of_men%27s_footballers_with_100_or_more_international_caps
Looking at the most capped players of all time, with 100 or more international caps, almost ALL of them are from the past 20 years.
Further evidence that they have been adding more and more...
Another option could be an FA Cup style knock out round including ALL nations, in order of rankings, starting with early preliminary rounds where players are unlikely to missed as much and/or play for smaller clubs during the season.
Also why are there only 24 teams in the Euros, but 32 in the...
IMO too frequent schedules. Key players pulling out all the time through 'injury', when in reality it's because their priority is club football.
First thing I would do is make a mini-league for minor nations to get rid of some pointless fixtures and have group sizes of 4, rather than 5/6. That...