I think after the World Cup the fans will have a big decline in interest in the secondary tournaments. It's one thing to watch the Europa League under normal conditions (after all, there are interesting confrontations) and another thing, having had enough of the super-important World Cup games, to return to the Europa League games. I think such sentiments will touch some players/coaches as well.
I don't know about that. To be honest for me the national teams and the national cups like European Championship and the World Cup have never been of the biggest interest for me. I just enjoy club football way more than national teams. I also think that the quality of the football games is way higher in the Champions League and Europa League then in the world cup for example.
Especially in the world cup there are some teams that are taking part that are at least 1 or 2 tiers below the best ones like Saudi Arabia and Qatar for example. Overall for me the world cup is not really the highlight of this football year. I will watch it though because obviously that this the only football that is going on during that time.
The spirit of soccer games is unified. Irrespective of what ever tournament it is be it world cup, Europa League, Europa champions League, Europa conference league the appetite to see this stars return from the world cup and resume their quest for who becomes the champion of which ever Europa cup will not pose any decline. I think it will rather boast up expecetations from true fans because the zeal for dominance will increase