Personally, I'd love a new PMD game. I don't care what the plot's like (as long as it has one that isn't 'stop your town fighting over a piece of chocolate' or anything). I just want one.
Oh, and I'd love a new Ranger game as well! I was a big fan of them all, really, although I'd like it to be difficult like Ranger 1, and it to have good characters. The ones in Guardian Signs weren't bad. Shadows of Almia was so-so for me, but I liked a certain villain. (Actually, I really like all the villains in Ranger, full stop. Except maybe the Sinis Trio. Never liked them much.)