DQ system cumbersome? For the most part, the later games (not including 1 and 2, which were pretty awkward), have some of the most streamlined and refined combat systems in all RPGdom. Battles go by really fast and everything feels so smooth. The only part that's really cumbersome would have to be taking items from your bag and giving it to new party members. 5 and 6 even made this pretty simple. But, this adds a new level of strategy, as you need to determine what you should bring into battle. Plus, one of the best parts about the DQ games is how tightly they're balanced and refined... games are totally consistent through and through, there are no game-breaking ways to cheese the game (with the exception of using an emulator and constantly save/reload when fighting Metal Babbles), the plot holds up... in exception to other more recent games, like FF6+ and even Star Ocean 3 (currently my favorite PS2 game)..
I will agree, DQ7 was disappointing and took WAY too long to get things going... maybe I'll pick it up again, one day. 3-6 are all fantastic games in their own right, I'd love to play the 5 remake too (please, S-E, please), and I'm eagerly anticipating 8.