Just beat the game. There are lots of choices along the way that I'm not sure in which way influence the game. Some moments can feel a bit unexplained or unintuitive, but overall it's an awesome experience. The ambiance is great and it's well put together.

Don't watch gameplays before playing. It's a masterpiece of an experience.

It's just as fun as how you thought it would be the first time you heard about it.
Coming from 500+ hours, I can say that it doesn't really get boring even after long periods of time.
I wish that devs would give freeroam just a tad more attention, seeing as some maps are super detailed, while others, (excluding gridmap lol), are in need of a refresh. (Mainly West Coast, in my opinion).
Lastly, I am a bit afraid that they're pulling a Minecraft and adding too much stuff. Also, they changed the menus, and they aren't as funcional or fluid as they were before.
However, I have to say that some things they added, like traffic, the Utah remake, the variety of stock vehicles, are really something to be very proud of!
Would recommend, absolutely.