I have an idea for modders out there. I think it would be awesome to swap the in-game Ryo character model with the Passport Disk Ryo model. I know someone did this before back in 2006 or 2007, and it is on YouTube. However, it crashed the Dreamcast -- but, I know it can run on NullDC just fine.
Also, swapping out in-game Nozomi model with the Passport Disk model would be nice as well.
Just an idea.
Here is the link to YouTube: https://www.youtube.com/watch?v=c2agmLEuK3g