I think that some expectations are quite high.
Yakuza for being a 3D brawler is top notch and has been maturing for more than a decade (Ex. the witcher 3 feels so clunky and it recieved a lot of praise despite). I don't think SIII will top that, they have to do a whole new system from scratch (and it'll be different from the original), hopefully it'll be serviceable, but I'm not keeping my hopes THAT up (and if it doesn't I hope they give more spotlight to the adventure/investigation aspect).
Graphics wise I think it'll be fairly competent, UE4 is still on the peak, and the models they've shown look pretty good.
Facial animations... I don't think we'll see much better than we have seen, hopefully more synchronized and it'll mesh better with audio, handmade animations for big cutscenes (again hopefully).
But then again, all we have seen is ok tier indie, but at this point SIII must be having a budget of what ? 15/20 million ?? (considering that Cedrick said after the KS that most of the money comes from Shibuya, so I guess it's more than the 6.5 millions and now with deep silver) That's quite a lot to expect "indie game level".
Let's put things into perspective: Hellblade budget was "way below 10 million", around 200-300k sales to make a profit (so $6-9 mill @$30 per game), and it's quite an achievement. But the game is a very simple, 8 hour singleplayer, only a couple of characters, little dialogue, with few enemies.