I arrived at the maximum level, having explored almost all the cards (but not all the dungeons!) And I'm not really bothered me, quests are basic, yes, but not necessarily repetitive, and RAND (random event on the map ) are fun to do.
The small downside for me is the absence of PVP (next upd corrects this point), the END GAME or it takes a lot (too much?) Farmer and of course .. the subscription.
A test for all fans of the series in any case, a good experience!
Jonathan S