Hmmm. Let's see - it is a very rigid design, with 2mm thick steel-vaned spider. The diffraction spikes would be more obvious than the wire spider on my current scope but the setup has other practical advantages. The poles, themselves connected at the apices for greater structural strength, are connected to where the spider vanes meet at the top and then bolted directly to the sides of the mirror cell at the bottom. It would work well scaled up to a larger size and hold collimation really well like the original version of this design - Greg Babcock's scope from a few years ago (
http://www.synrgistic.com/astro/24inch.htm ).
I think I might build a 22" F3.66 version - feet on the ground for most viewing, almost double the light collection of my 16" Tridob and in as lightweight and compact package as possible.
Think I'm joking don't you......
Tim