Even daoc was a downward tune of the leveling experience from previous mmos.
I got bored watching that that last 10 lvls go by in daoc and it coincided with that three month drop off point that a lot of mmos seem to have. I left about month 4 or 5 due to just not having any real purpose other than grinding out the last lvls that seemed to take for ever.
Pretty much the same thing for me in wow.
I hope that the lvl boost for Cryodiil takes some of that away and I hope they put in some kind of housing system that I feel more attached to rather than just spawning in some random npc town beside the bank when I log in every time. MMO's have a retention problem and I think it is directly related to becoming lost in endless progression and leveling fatigue. But also what to do once you get there. The only reason I play a game like Skyrim so long is that I can make a new character and play the game totally different several times. The game does not get stale as fast that way.