Eh, I could get behind this. Depends how "open world" it is though.
I hated how in the Just Cause series, you had to unlock the other regions on the map or you'd be insta-killed if you travelled to an unlocked region.
If they do it like Ghost Recon Wildlands, I could see how that could be fun.
Alternately, if it's like Sniper Elite 4, I would be bummed as that's not really open world, just big mission areas.