Wait, what, where are the "I play for fun and with my low-level friends thanks to awesome downscaling" posts?
To me it seems natural that the population shifts to new content and/or the one with the best rewards. From this point of view, the maps don't hold replay value past map completion. Nevertheless, I would consider it a bit early to "overhaul" maps to better suit the needs of people with full map/story completion; wouldn't this sort of take away content of an initial "play-through"?
I don't think that this should be on Anet's priority list, but it might be something to welcome in the far future.
On the Orr maps:
Smartly using the terrain, a speedboost and/or condition removal will get you far enough to map complete even on your own. I wouldn't call these areas difficult, but they can be quite annoying and dull (same few risen mobs all the time).
At this point, a map feels attractive to me when it's well suited to complete the daily, Orr doesn't qualify due to the almost non-existent mob variety, the rest would be fine (as in, same as any other map).