Its one of those that deserved to be made into official content. Even if its not laserscanned, its trully a flawless reproduction of the real track. I remember back into early early access alpha assetto corsa, when lino started working on this track and back then it was already above the level of the other tracks been made, tho lacking a lot of details. The main difference was lino itself, who kept himself motivated all along, and kept updating his track, slowly although continuously ever since.
Its a masterpiece.
do you have any reference images, where you can point out your described issues?
I was at the racetrack one week ago and it felt pretty much like i expected it to be.
Maybe your feeling of it being wrong comes from a codemasters game? Their version of montreal is.. off.