All I hope with this game is that we get actual party members (think 4 through 8's casts) again instead of IX's create a character system.
After playing X, IX very much feels like a template for X and just about nothing more than that. I'm pretty sure they're past the "let's try to make a MP MMO type game" and will just work with X for a while with that. I'm expecting us to go back to full fledged story where the characters in your party matter again. The hero can be a male/female deal and still be important to the story. DQ3 and 4 did it fine. Honestly, the only game I really see a need for the main character to be male was DQ1 and DQ5 for story reasons (maybe 8 as well). In the remaining games it could have been player choice and there wouldn't really have been an impact. But the whole "your entire party is custom" thing doesn't need to happen again. Classes can be DQ6/7 style to add that customization.