In some cases fixing AI isnt really the correct thing to say considering pedestrians and drivers dont seem to have any AI. Artificial sure but I'm not entirely sure about the Intelligent part.
Too much of the game was cut most probably because of management being over ambitious with features, losing a ton of veteran staff due to said poor management on W3, and once again. As always. Having a release date way too soon.
if the game had no bugs at all it'd be a bland mediocre action adventure game (unlike the RPG they wanted to make, they even stopped calling it an RPG) with a static and dead open world. But an excellent story if you ignore the lifepaths or lack thereof. Even then its pretty short, even IF you do all the content. As I did.
I did all the gigs, all the side jobs and all the NCPD missions. Vast majority of that aint worth doing at all. Do side jobs, they're excellent. Gigs and NCPD? Nah don't. There's like 1-3 that are good. But I don't remember any of them.
I highly suspect the finished game was suppose to be much, much more. As with what they said in interviews, spoke about on their own youtube channel and all that sort of stuff. What we got is probably less than beta since features were gouged out with a spoon instead of being left broken. (Once again think police system. They spoke of a fairly complex one but used a bandaid solution of "teleports behind you kid, nothing personal.")