I’m hoping for zones to be similar to WoDs zones, but instead of max level daily zones, they will be scaled like 5-10 levels above your character, if they allow for any zone in any order. That way there will still be something to come back for later, or something to give you challenge while leveling.
Ultimately, I feel we will get a 5 act/zone linear structured campaign that we will need to complete once per account to unlock adventure/free mode for all future characters.