I understand you clearly and I agree. In addition: To be more precise and going deeply into what you had pointed...When Ryo's - changing directions-, if you fix eyes on back of his shoes, you can see there's a floaty point in middle of a movement, there's no 100% contact and weight, again when aproaching stairs too...this is almost imperceptible while running or going straight though...to exagerate It's like a hockey player, the foots or the floors are moving more or less than the other as somwhat icy - in some midle point of a movement -.There’s a lot to unpack in your post so I will just concentrate on the camera. There’s nothing wrong weighty controls, that’s why I love Killzone 2 because the combination of the player movements, setting and animation ties into all of this.
Shenmue 3 is a very different beast and I think the modded camera is far more suitable in a few aspects. First the game as some have noted almost has a fish eyed FOV and the new camera makes it feel less extreme, how ones natural eyes would be. In addition having camera pulled back and seeing Ryo’s feet make contact better grounds the player. I know Suzuki has said in interviews the camera seen here was what he intended for original games but couldn’t because of technical limitations but I hope if there is a Shenmue 4 he tweaks what we see here.
So, from there, in my opinion, dreamcast technology allowed 100% contact all the time in all directions and speeds - for the most part - . Lacked the fov thought...Unreal Engine or other modern technology allows Fov playing, blooms, blurs, fish eyed, particles, particles deformation, millions more polygons, resolution, texture deformation and so on, but lacks in the weight, movements, and realistic physics, as in quality, not quantity. It's like less is more type of thing.
That's why I think they hide it, for you to focus on the landscape and not the character.
And I suspect Suzuki doesn't like todays techonolgy in this regard for this and other reasons.
In other areas, like Ryo's clothes, there's a pic of a DC Ryo compared to a PS4 Ryo...the colors and the weight of the image as a whole, lots of people are judging old graphics better...
Ideally the quality of that technology mixed with the quantity of todays would be the best.
I liked that you've seen there's a lot to unpack, it's a long topic...as discusing if Blue Ray is better than VHS, or CD to Vynil, not always things are evolving in all areas.
Salute to you.