so , blizzard updates certain models often, creatures, places, architecture.
e.g. Zandalari trolls - originally used the Jungle troll model, but now have their own
Suramar - night elf city in Broken isles, shows an upgraded version of darnassus, altho technically, it's not new, but old as that's how night leves use to build when they combined both the magic of the well with the druidic magic of the ancients.
Every expansion we see something new, even legion has new night elf wood buildings. So going back into the world what models do you think need to change?
1. Kirin'Var in netherstorm, uses stormwind human buildings - but it w as designed before Dalaran was in the following expansion - it's ruins should look more like a ruined Dalran type of thing than human buildings - I hope they change that.
2. Half-elves - currently they use blood elf models, but they should be a unique model neither blood elf nor human
3. Half-orcs - currently use orc models they should also be a different model
4. Mok'nathal - use orc models again, they should also be different
5. Female Broken - currently use Draenei female models, need to fix
6. Female Ogres?
7. Lordaeron ruins use the old human stormwind model, should use a ruined version of forsaken buildings
8. Night elf worgen - look identical to h uman worgen, they would look different no?
9. Taunka females, currently use tauren female faces , should be different.
10. Gnomeragan should have lots of gnome hoes in it, like houses all over.
EDIT - Addition
11. Silvermoon remodel too to look like more this: http://wow.gamepedia.com/File:Chroni...l%27Thalas.jpg