These are all really good points. The intention is not for people to not submit a castle because it “Won’t win” or “Isn’t good enough”. It’s for everybody to share what they can do when given a nice, fun challenge like this.
Ultimately, I think GamedevCala is right! We will just pick at random. I’ll put all the entries into a random generator I find on the internet and get back with the results. (Edit: Obviously I won’t count me if that’s what comes out lol)
Meanwhile, I’m about to upload a gallery with all our castles in one thread over in the Lounge. I will provide a link once it goes live. (DOUBLE EDIT) Here it is 3D Gallery: Week 1
(TRIPLE EDIT SUPREME COMBO) After generator a random number from one to 8 (for 8 submissions, in order of submission), RNG has favoured @AltDemon for picking next week’s theme with a randomly generated 8. Congratulations 
Please either PM me the theme you would like and I’ll set up a thread for our next gallery, or you may set it up yourself.
Thankyou to everybody who submitted this time, and I can’t wait for your next submissions