Looks nice. Lots of configuration options. It seems to me like the trapdoor is no longer, and replaced with just vents. This may not be too much of an issue, as I don't suppose most people are constantly swapping the HW in and out of the trapdoor.
I spent quite a bit of time Retr0briting my A1200 cases, but one of these might be good for a custom paint job. Are any details available on what paints can or cannot be used?
Good luck with the funding project