http://www.hplovecraft.com/writings/texts/fiction/soi.aspx
Deep Ones are known to have Churches to Dagon all over their towns… Their Cultists and hybrid citizens are in broad daylight and have obvious Frog-Fishmen faces.
How would they fare in Azeroth? They lack the subtlety of the Tidesages and Twilight’s Hammer and their Gods the Great Old Ones are upfront about what they want when talking to people in dreams unlike the Old Gods who sow chaos with whispers so could they survive in a world like Azeroth?
So like… Ones in Shrine of the Storm? Squid faces? Servants of N’zoth.
Already exist, didn’t you wonder why Kul Tirans have better swimming speed and breathe underwater but are so fat? It’s cause they are Deep One Hybrids.
Deep Ones have Frog-Fishman faces that have unblinking eyes, bald heads, rough scaly skin and build multiple Churches of Dagon in plain sight and anger animals by just being near them!
They’d find adventures routing their underwater cities mere minutes after visiting their city above water. They completely lack the subtlety that House Stormsong holds!
Honestly the Eldritch Gods of HP Lovecraft are far less subtle than the Eldritch Gods of World of Warcraft despite Lovecraft being a more subtle writer than Blizzard by far.
The Shadow over Innsmouth’s subtlety was never in the city of Innsmouth but in the Narrator being a Deep One/Human Hybrid.
The Deep Ones would never be able to hide in WoW and would be found out a lot sooner than House Stormsong was(took visiting 3 House Stormsong territories for even a hint to whom they worshipped whereas we got beat on the head with Innsmouth’s Deep Ones’ entire true nature before even getting to the town).
naga would either hunt them down or enslave them, similar to the other denizens of the sea.