I would think Remco to be better at RVV than at Amstel or FW. Seeing what Pogacar did this year, I don't see why an in form Remco wouldnt contest.
The handling skills and the descent abilities have improved slightly. But Evenepoel still can't ride efficiently on cobbles and gravel. We saw that again this season. It's partly psychological. It just locks up when riding on gravel. In the Brabantse Pijl we saw him mess on the cobblestones.
I don't think this will ever work out. So, no Flanders or Roubaix, not even the Strade Bianche and most Flemish spring classics. He can ride Milan-San Remo (without winning chances) and the Amstel. He can even win that race if the race is made hard (early).