Is mod requesting a thing that is even allowed? I do really appreciate the enormous amount of effort and time that goes into hacking Shenmue, a very complicated endeavor. I don't want to come across as rude or ungrateful somehow. Indeed if I had non-tempremental tech, I'd try this myself with my own time and patience.
Anywho, my idea: I'm going off the work I've seen more or less seen dotted around Youtube and the like, thinking it might be a possibility. My idea is to re-create the bad ending of Shenmue I by swapping Fuku-san's model with Lan Di's in the Hazuki Dojo and make the sparring become a 'fight scene', with actual gameplay to boot! As a 'stretch goal' (:P) i'd swap the dialouge appropriately to make it more dramatically fitting to an otherwise undramatic scene.
Well that's about it. I'm not sure i'll even get a response for this but it's a thing i'd really like to see.