But then, you also have to consider Dragon Quest Swords and Dragon Quest Monsters. It seems like they're willing to use the game's name for new things, but when they do it to the main series, they do get flack for it. Why don't we try to consider it from their perspective?
Take Star Wars. When the movies came it, it was almost like a holiday, with most fans - fans on any level, I might add - take the day or days off prior to and on the event, so they can be the firsts to see the movie. Now imagine that George Lucas decided that instead of offering Episode 3 in the traditional form of film, he decided to use the more modern, text-to-decide-the-outcome American Idol style to direct the movie. Some fans would be happier, but the majority would think that he is selling out or switching something that doesn't need to happen.
Now, Star Wars lore, along anything that isn't one of the six episodes is up for grabs, and fans are happy just to get more of it. That's probably why people loved the Clone Wars cartoon, and are anticipating the television show that will begin soon.
I think you can see the parallels between Dragon Quest and Star Wars. What you and I want probably isn't too respectful to the majority of Japan, especially since there haven't been so many heavy game play tweaks to the Dragon Quest series when compared to the Final Fantasy series.
Now I do hope that they move the concept to a new DS title, DQ spin-off or not, because I loved the idea. I imagine a good bit of the idea was inspired by FF:CC TRoF, too, so we might get to have some of the experience in that title, as well.