UEFA changing Nations League and Euro qualifying format again, starting Sep next year
Not much though
1) QF 2-leg stage before Final Four for League A teams placing 1st-2nd - so +2 matches for big NTs
2) Team placed 3rd in League A or B groups will do relegation playoffs. Last placed team gets straight relegation, 1st placed in lower league straight promotion - +1 game each
3) For Euro and WC qualifier groups - currently have 5-6 teams per group, this will go down to 4-5 - so -2 games for most national teams.