Fun fact: Bundesliga could end up with 6 teams playing CL next season and a total of even 8 teams playing internationally. We could even see a 2. Bundesliga club playing internationally next season.
Before the CL/EL half finals Bundesliga needed either 2 wins or 4 draws to secure the 5th CL spot which we now have for sure and which is currently hold by Dortmund.
Now
if Dortmund wins the CL while being 5th at the end of the season their CL spot from the Bundesliga goes to the team ranked 6th (Eintracht Frankfurt rn). CL goes before EL so Frankfurt would play CL while the team ranked 7th would get the EL league stage slot from rank 6 (Freiburg rn).
The DFB cup final is Leverkusen vs Kaiserslautern (2. Bundesliga).
Leverkusen is already qualified for CL but the winner of the DFB cup goes automatically to the new EL league stage. So if Kaiserslautern wins we would see a club from 2. Bundesliga playing in the EL, skipping the qualification rounds.
Should Leverkusen win the DFB cup they would qualify for the EL but again, CL > EL. In that case their EL spot would go to the next best ranked Bundesliga club not qualified for international competetion which would be rank 8 of this season (Hoffenheim rn).
Given that we have two matchdays left which means 6 points are left on the table teams up to rank 12 are competing for international competition at the moment. Fucking Heidenheim who are playing their first Bundesliga season ever could end up in the Europa League.
And then there is the Conference League. At some point in the qualification round system, before the new league system starts which is replacing the old group stage system, a Bundesliga club would join the competition. But I couldn't figure out if the regular CoL qualification spot goes to the next team if the current team is already qualified for EL. I would guess so which would mean Bundesliga could end up with even 9 teams in total in the international competition which is half of Bundesliga (we have 18 teams).
So basically if the stars align in the right way Germany would be the nation mostly profiting from the new CL/EL/CoL system bc all of this only works because more teams are playing internationaly next season which would also mean in the long run that Germany could secure their spots more easily in the future just by having a shitload of teams competing and farming points right from the start.