First and foremost, I would like Yu to make sure the game controls like a modern game. In that I mean by getting rid of the old tank controls. It worked back then because of the limits of the DC controller. In this day and age, it would be almost inexcusable. If people find the old controls better somehow, maybe they could create the option to do so.
I'd also like to see a much more enhanced version of the original Passport stuff, but with more statistics.
You know changes are coming, because the world has moved on from 15 years ago.
So, what would you like to see?