Hey Pizza, I'm not sure if there is any reason for this on your end or if it was simply overlooked and I'm not trying to nitpick but you seem to make a good effort at streamlining everything so I thought I would let you know; the rotations in the blend file on some of the objects in this pack are not applied to the data.
When importing in engine (I'm using Godot) this causes objects such as hallways to be vertical rather than horizontal as they are in Blender.
This was any easy fix for me but I thought you might want to know. (For those wondering - you simply select the relevant object in blender and press Ctrl + A and then select Rotation. You can also do this for location and scale.)
As always I look forward to seeing more of your work! :)
P.S. would you prefer feedback like this as comments on the relevant project page or via Email with a page mentioned in the subject?