Revamped zones would be nice. Both for the Blood Elves and all other races.
I am not much of a fan of putting everyone into Orgrimmar and Stormwind. We are forced to be there due to transmog and such, but could still give some love to other cities.
I recall this was one of the features that brought me to the game even more. I started as a Night Elf, in Night Elven places and such, just to then find out in awe that every single race had something different. The world felt HUGE.
Lately Blizzard is kinda homogenizing everything with the isle starting zone and dumping every race that loses something to the core capital. And in my opinion that’s boring.