I don’t know every little detail about these small races with very limited quality fields you mention. But didn’t Brussel Cycling Classic and Overijsse change the parcours in recent years?Like the Brussels Cycling Classic you mean? Won by Ewan, Groenewegen, Boonen, Greipel, and.... Evenepoel?
Or the Coppa Bernocchi won by Viviani, Colbrelli, Nizzolo, and... Evenepoel?
Or Overijse where he followed Sénéchal?
Since he returned from injury, Evenepoel raced 5 semi-classics with 3 victories and one top 5. So yes, I really would have liked to see him race omloop, kuurne, e3, dwaars, wevelgem, amstel, ... because these races are very open which is exactly what he needs.
Bernocchi was impressive just like the others. But in Omloop it will be much harder for Remco to get a gap. It is risky for him riding these races. And there is no reason for him yet to make a switch, because he is doing just fine in stage races I believe.
But ok, if Overijsse/Brussel/Bernocchi are now semi-classics in cycling that can be compared to the Omloop and Kuurne then it is very clear that I have missed something in general.