I loved the redux2 version and the redux3 version is just a great improvement!
First, the walls in the courtyard are a nice touch for me, they blend right in with the rest of the map. Also, that light outside east hall is very useful, normally I'd have to turn my flashlight on in that spot and for that spot only; that little detail really adds to the map for me. Overall, it's just a wonderful map, you really deserve some sort of prize for it. Having played with Hammer a bit in the past, I can really say, this must have taken ages of time and a heaping helping of perseverance to get this map right, and I applaud you for the wonderful job you did.
I sort of just spilled something out, for the tl;dr, I say only this:
It's an amazing map, now go play it!