Europa is always an exciting competition because of how diverse the teams are in this competition. The clubs who struggle to make the top four in their respective leagues are seen as bad and then they go ahead to play in the Europa and then they do wonders! Atalanta last season was taken the least seriously and they beat everyone to take the trophy. I don't think Liverpool or Leverkusen in their worst nightmares expected Atalanta to be such a force. This is the beauty of football, the unpredictability, and the unseen legwork players and managers put in to do insane work is beyond the beauty of the game. Europa is as exciting as any other European competition, and we all are here for it.
To be honest, I doubt that Kompany can make Munich better next season. Yes, in my opinion Terzic is much better because as you said Terzic knows the Bundesliga very well. I don't know why the club management didn't choose to negotiate with him but there is a possibility that they have also received a rejection from Terzic or they are not aware of the fact that Terzic has left Dortmund. In my personal opinion Kompany still doesn't have the level to coach a team of Munich's level. I'm not underestimating Kompany but statistically Kompany doesn't have a good enough background. But I hope Kompany can prove the trust that has been given to him by the club management.