I started playing the game a few days ago. I'm on Homicide right now. Really enjoying it. I haven't seen anything yet with the interrogations where I thought Cole was being an out of character dick. His character is a dick. I mean when you use doubt Cole is trying to get the characters to admit they are concealing information, it would be out of character if he wasn't aggressive about it as I'm not sure how he's going to get them to admit anything otherwise. But I did suggest earlier in this thread that in a sequel they should have a passive doubt and aggressive doubt option. Still seems like a good idea, and I always like more options.
I'm terribly inconsistent with my interrogations too. I either do great or poorly. I can definitely see myself playing at least some of the cases again if just to see the different dialogue during the interrogations.
I do like the LA of 47, too. It's pretty neat driving around and seeing landmarks. I'm definitely glad they have it in the game and subsequently happy that a lot of you aren't programmers over there at Rockstar/Team Bondi.
And I actually like the street crimes. I thought it was smart to make them small short diversions. I do sometimes have my partner drive, though, when I just want to get the game moving. I do like that the on foot chases are very smooth about and ladders and such. It's sort of like being on a ride, especially with the pre-programmed obstacles that get in your way.
A lot of people say the story shits the bed, so I'm just trying to enjoy it for the investigation and interrogation, but so far so good.