I think for me, my whole approach to the game is encapsulated in the
Sharkey's Lieutenant quest line.
It took me weeks to level up and beat this solo. I would go off and discover new areas, have different adventures, and every time I levelled up once or twice, get a couple more skills, weapons, etc., I'd think "maybe I can take on Sharkey's Lieutenant this time", and would come back and try again. It was the same thing with the quest into the
Brigand's Watch to rescue the damsel in distress. I tried that one about ten times before I finally levelled up enough to do it solo.
If all the expansions are going to cap levelling at 5 levels, I wonder how that same feeling of expansiveness will translate. Translation: it won't, or at least, I don't see how it can. And apparently neither does Turbine, hence the emphasis on Skirmishing, "quest packs" and other stuff.
It was fun to be Level 13 and have so much to look forward to - getting a mount at 30, not having any idea how far I had to level up in order to beat Sharkey's Lieutenant or rescue the girl from the Brigands, etc.
I am finding now that many of the quests left available to my Level 56 hunter are obnoxiously difficult group quests with mobs of 15,000 HP monsters that can't be soloed. I've taken to grinding out old deeds - killing greyed out beasts in bunches of 300 at a time - just for something to do.
They went the wrong way. I would have loved to have seen Rohan added in a system where you enter the area with level 60 character, and start over at 0, or perhaps have a "column shift" or something, and have 60 more levels of vertical movement to play around in. Make it like entering SoA once more. But that won't happen. Instead, we have skirmishing and MvP and other stuff I don't really care about.