I'm sure the organizers of the races and the fans gathered in various associations know very well what's the best for the routes and races. They're, practically, living on those roads and the most of us only have an idea how it looks like and what the effects are.
Take the Koppenberg for example... Has the race lost or gained anything since it's restoration? And it was much more extensive work than in the case of the Arenberg (well, it was much worse too, to be fair).
And there we are in Flanders... Next year's Omloop will have Elverenberg, which looks like an interesting addition (or substitution), and the rest of the course is pretty much the same as it was this year.
Flanders Classics is opening the season with the old De Ronde experience, climaxing five weeks later in Oudenaarde. I'm not questioning organizers' intention to round up their events, offer the old, iconic, De Ronde experience to new fans and remind older fans about it (organizers and locals know the best, as I've mentioned earlier), just to point out that it will take some time to get used to new outlook of the race just like it was the case with De Ronde.
And right when we get used to it, I guess Flanders Classics will find a fitting place for
Lange Munte somewhere inside the five weeks, as they've done with Muur-Kapelmuur and Bosberg.