You'd be surprised. I'm honestly kinda happy this is gonna be left more towards the Nexus Community rather than LCPDFR because I think, functionality and community wise, CP2077 is closer to Fallout and Elder Scrolls than it is GTA V.
Hopefully CD Projekt is more open than Rockstar, and maybe (though looking doubtful) might even release some sort of SDK for modding. Either way, it seems that reverse-engineering Cyberpunk is going to be quite worthwhile and I wouldn't be surprised if something like LCPDFR came out by a different group.
I mean you only need to look at games like Skyrim and Fallout, with SimSettlements and numerous other huge overhaul mods like the ones that add Fallout 3 to New Vegas, new vegas to 4, etc to realise that this isn't as big as it seems, at least not in games outside the GTA modding sphere. The only thing you'd really need is the payer models and car models of the police in the game, the rest would all just be scripts, which are up to developer's skill. People already have experience with modding the REDengine from Witcher 3, and the FR series is VERY well known, it's only a matter of time before someone recreates it in my opinion.