The new dungeon scaling seems like a real benefit to people who are in veteran levels however, I think it made it actually harder to hit a dungeon while leveling up.
It used to be you could find someone outside the level range who wanted to come back and do the dungeon, but now that is all kinds of problematic (if they're too high nobody might get xp or the dungeon is too hard for the rest) so you have to group with people in your level range. I spent an hour last night in the queue and using /zone to find an Arx group for my 28 tank/dps character and there were no bites.