After close to a year of research and failed experiments, I replaced the Ultor Assassin suit, Empire Helmet, and baseball bat with new models and textures here. Gonna attempt NPCs next, then vehicles, then maybe some part of the default Boss models.
The catch, though, is that the process is vibe coded, so it would probably be best if anyone passionate about this entry+version with programming experience reach out about taking the research I've done and developing a fully man-made process and toolkit for this - as an artist myself I can't imagine many would want to rely on AI even for a white whale like this. My Discord username is behon and I accept DMs here too.