I get the feeling he’s saying more that both factions should have content in a zone, but not that both factions having the same content in a zone.
Exactly! You hit the nail on the head. Just like we do for a lot of expansion zones. One faction is favored in the area, but the other still has a presence. Another good example is Duskwood in classic, where they used to have Forsaken questgivers in a tower on the very edge of the zone. Or for my favorite example: Kul Tiras and Zandalar in BfA. Both areas are controlled by one faction, but the other faction gets a small presence and can participate in certain side-quests, while the area’s “main quest” is strictly for the other side.
You get a unique experience for each faction, but never get entirely locked out. I think that’s really cool. This is the way I prefer most areas to be.
The only places I think should be 100% non-contested are each race’s starting zone, and the area immediately next to them. (Westfall etc) but even then, having a special contested phase for these areas, or even just putting simple service and a neutral flight-master, would be pretty cool.