There hasn’t been one for either with any seriousness for a long long time unfortunately.
Here is my extended list. I believe they’re mostly all the most recent versions of those threads.
Several Other Threads Of Note
A Compilation of Customization threads - By Benhart
Ankoan and Jinyu Thread - By Rorrand
Arakkoa Thread - By Lore
Big Blood Elf Customization Thread - By Veras (Zandrae)
Blood Elf Customization Thread (Glory of the Sin’dorei) - By Kyuu (Fenelon)
Broken/Krokul Allied Race Thread - By Mianyaue
Covenant Races Thread - By Emerril
Customization Suggestions Megathread - By Drede
Dark Iron and Mag’har customization Thread - By Grymes
Dark Ranger Thread - By Balesong
Drakonid Thread - By Keldar
Dragonmaw Orcs and Wildhammer Dwarves - By Keldar
Eldritch Knight/Void Knight Concept - By Greatbrae
Ethereal Thread - By Lore
Forsaken Customization Thread - By Baalsamael
Forsaken and LFD Model Toggle Thread - By Greatbrae
Forest Troll AR thread - By Zurogrusel
Furbolg Discussion Thread - By Fenelon
Goblin customization! - By Hendry
Human Customization Thread - By Anansi
Kelfin/Gilgoblin Thread - By Ruff
Kul’tiran and Zandalari Customization - By Kyzendra
Kul’tiran Love & Customization Thread - By Morbann (Fenelon)
LFD and Draenei customization - By Averyx
Man’ari Eredar more customizations - By Mianyaue
Mechagnome Customization - By Coaxial (Fenelon)
Mok’nathal Allied Race Thread - By Mianyaue
Nathanos Style Forsaken - By Fallyn
Nightborne Customization Thread - By Ellinia
Ogre Thread - By Bagzak
Big Orc Customization Thread - By Zurogrusel
Rajani Allied Race Thread - By Mianyaue
Saberon Thread - By Lore
San’layn Thread - By Fallyn
Saurok Thread - By Bagzak
Sethrak Thread - By Nadezhdha
Taunka Thread - By Zitga
Tinker Megathread - by Tausnor
Tuskarr Playable Race Megathread - by Jorreno
Tuskarr Playable Race Discussion Thread - by Mianyaue
Void Elf Customization Thread (Ascension of the Ren’dorei) - By Fenelon
Vrykul Discussion Thread - By Mianyaue
Vulpera Customization Thread - By Fokoru
Warlock Stables Customization - By Baalsamael
Worgen Customization Megathread - By Keori
Worgen Tails Thread - By Caelus
(Like with Bagzak’s threads you can find my lists on either my Blood Elf, Void Elf, Mechagnome or Kul’Tiran threads.)