How plausible/fun would this idea be?

What if there was a game that took place entirely in the past, before the PWT but after DL-6 and all that. Something like a game that focuses on stuff like Grossberg Law Offices while Hammond, Armando, and Mia worked there while Detective Badd, Gant, and Lana were at the peaks of their careers. I think it'd be cool to see these characters interact and exist in a larger capacity before we see what happens to them. I'm not sure how the logistics would work but I think it has potential.