Absolutely. I’d love to see a storyline that shows the Night Elves solidifying their presence again from Darkshore to Ashenvale, into Felwood and Winterspring. Starting perhaps with a early campaign in Mount Hyjal where you secure the land there then follow storylines that sees Jarod and Maiev, Mordant and Shandris taking leadership roles in those zones.
Easy to add in the Furbolg as a storyline and force there.
Similarly the Horde could use a focus on its Ogre clans and see them secure the Dustwallow Marsh lands in full and then push out into the other zones to assist the Horde with members of the Ogre clans taking prominent story positions.
Would be amazing.