For what it's worth, it feels very linear to me. It's not like Dark Souls 1, where you can go to Blighttown or Valley of Drakes early on - there are some sidepaths and stuff, but it doesn't look like you can just run into high level areas early on in this one
Also, disconnecting the hub from the rest of the game, why was that a smart idea? I really don't like that...
Is it more or less linear than Bloodborne? Bloodborne was open enough for me.