Heyo, me and a few other people are very interested in this, could you supply more ps4 files for us to look at? Preferably all the common ones, as they contain the majority of the models.
The idea really intrigues me personally, since that means if we could rip from the PS4 base game, than maybe if somebody still has the PS4 Pre-Alpha Tech Test we will be able to finally datamine and use assets from that!
From what we've been able to do so far, the scripts and text files extract fine, the VTFs aren't working and neither are the models in the provided s2s vpk. Though its possible the VPK Tool couldn't extract those models since we don't have the entire VPK structure for s2s.
Anywho, I know I'm way late to this subject, but I hope you can get back to us!
(BTW if you can, try to dump the entire thing in mega or some large file hosting service, seeing all the files will be very useful)
>Edit
The files had been dumped elsewhere