Hard to tell. How in detail are they going? People don't seem to grasp at how big Shenmue 1 and 2 where in terms of content.
"Adding up all Shenmue and Shenmue II NPC, we reached a number of 450, maybe more. For each NPC, we created a background : name, how old the NPC is, weight, how tall, its partner, its location etc." - Yu Suzuki
http://shenmuedojo.net/new/extras/interview1114.htmlAre they doing this again? I think he said once that the 3rd game was to be bigger than the first and second. The game was suppose to be about a small town kid's grand epic journey.
There was also a thread at Shenmue Dojo where a guy gathered all the music from Shenmue, every little jingle and stuff. It was a enormous amount.
Hard to tell. It depends on how deep they want to go with it.