That's basically what I was thinking. The tiles are too difficult to work with, and it's evident that everybody has lost interest, so I've been considering making a new thread entirely, if nobody minds. I think the current image needs to be left aside, and a new art style and/or theme should be chosen.
And perhaps instead of people just adding to the existing image immediately, the tiles could be posted in the thread on their own to be fine-tuned by others to fit the overall style. If there's enough interest, that is.