I also got the kind of closure in a similar sense to you, the one that got away kind of deal.
But I would still really appreciate new games in the series or other games designed similarly.
Even if I questioned a lot of the game, I enjoyed the fuck out of it, part nostalgia, part that it's still a unique flavor.
I can understand why other games don't go this route, I understand why some players think the game doesn't respect their time (or simply don't care about the core gameplay).
The image of FFXV flashed on my mind and with so much money poured on it and some of the best looking environments I've ever seen on a videogame, everything feels lifeless and just a pretty backdrop for something that actually isn't there, and I can totally understand some of the decisions YS took and why Shenmue is still such an unique franchise.
I have felt so many times the need in games to just roam around a little, but even if I do most games just lack that depth a real place would have and Shenmue does provides me with that outlet, hell, I can just look at a garbage bin next to a soda machine and feel immersed into it, entering a warehouse that serves no fucking purpose more than being there, looking at different bars each one with their own vibe and thinking which one would be my favorite drinking hole, spamming the same NPC just to see how many ways of saying nothing they have, I just love it.
Shine on Yu crazy diamond.