What the hell is this? FM just as GT and other simulator will never go open-world. It's not even the same bloody genre (almost).
Why would I want a simulator of racing on real circuits with championships and the thrill of pure driving go open-world where competition will be not on driving skill but who avoids incoming traffic better, learns the shortcuts and the fastest route?
Now open-world racing can be fun but, come on, closed-circuit is the real deal: that's why all tournaments are done on the track and not in the middle of NYC.
For gaming, open-world may be fun, because it allows us to do things we'd never do in real life, but simulator series don't appeal to wreck-the-car, find-all-the-painting-stations, open-world public, their target are for people who like cars, tuning, performance, behavior on the road and enjoy driving them. That's why FM is a racing simulator it's the damn game description. So please, go back to Horizon, NFS and rid us of your stupidity.