Great thread.
Here's what I built - I'm busy veneering the cabinets, so not had a final fit yet:

and a 'rare' side view showing my 'awesome' soldering skills:

The XO board is : 9.5' x 6' (24.5cm x 15cm) with a cap overhanging.
It fits in the base reasonably well, after No-rez installed.
I was able to create a 'triple point' for driver wiring return, to minimize the number of wiring splices required. Its a tough build, with not a lot of space and a very congested board.
Hobs solution and end result is beautiful.
David