Not sure if there are any Minecraft players on this forum, but I thought I'd share my Thief-inspired map anyway. While it does not take place directly in the Thief universe, I've included some nods to the series, like Heartless Perry's pawn shop, Trickster's forest, a Keeper compound, Thieves guild, Hammerites, Mechanists, City watch and Garrett's place.
There is a questline at the museum which is about retrieving seven legendary items for its collection. One quest has you finding the Keeper compound and another one requires you to do some jobs for the Thieves guild. There's also a mission which takes you into long forgotten Hammerite crypts.
Download: https://www.oakhold.com/downloads/oakhold-2.1.zip
It currently works in Minecraft version 1.14.4 only. I recommend pureBDCraft resource pack and Optifine to help with FPS and dynamic lighting.
https://optifine.net/
https://bdcraft.net/downloads/purebdcraft-minecraft/