You've made an awesome job with this.
Dang epic!
Here is a few notifications of mine though:
The blue circle shows a corner which completely lacks of detail. It doesn't blend well with the rest of the build.
The orange circle shows an empty flat roof which I find pretty odd for the build. The top of the roof is also too close to the windows that is lying under it.
The red circle shows a wall that seems too flat for me. The round glass window's surrounding should have more detail.
The brown circle shows windows that I think is unfitting. Could you take a closer look at it?
Don't mind the green circle. :P
When I think about it, the whole "south facade" doesn't fit well with the build at all.
And yeah, I know this is a wip.
Maybe put some gargoyles? :)
Thanks for the detailed feedback! As I said in the OP, the exterior is only 90% done. I need to fix the south and north transept facades and the east end.
I definately planned to do something about the blue/red circles. I was tired when I made these, and I wanted to get them done quickly :P
I'll take a look at the brown and red circle too, while I'm at it. What kind of windows do you suggest for the brown area?
Gargoyles and sculptures will be done, of course :D (though they it's pretty hard to make them look good with default bricks :/)