Honestly, Ark was so close with that aspect with the Obelisks. It would have been so cool to allow for char based PvP toggle (meaning when the char was made it had a setting if it was PvP or PvE), then allow for the Obelisks to teleport you to the designated PvE vs PvP zone. Have PvE invisible to PvP and if the structure is owned by a player in the other zone, it doesn't exist. Have a designated spot on the map accessible like the boss arena system that allows PvE and PvP players to mix and mingle/fight if they wanted to.
This would allow for using the same map for both modes, so lower system resources, it's just the structures itself only show for players in the same PvP mode. So a base could exist in the same location on both PvP and PvE and the two modes would be non the wiser.