Roger, I think there would be great interest here on all aspects of making one of your tents. Personally I am just not competent enough with mathematics to really understand all the theory behind a lot of how the measurements work, but there are a lot of people here who are very good at that and seem to love discussing it. It takes me forever to figure out simple calculations for a tarp, but that is only because my mind doesn't work well with mathematics.
I'm wondering if it might just be easier for more people to be able to get involved with making one of your tents by presenting a single design with all measurements already determined, say a two-pole, two-person tunnel tent. (what I'd personally be interested in) That way you'd simplify the whole writing up of the project and allow more DIY people to get involved without going too deeply into all the theory. For anyone who wants to explore further and customize the concept for a solo tent or a three-pole tent you could maybe add an appendix with all the extra theory outlined for further experimentation.
Perhaps the key point in writing up such a project would be to get as many of the BPL members involved as possible, and that means keeping the focus of the project as simple and accessible as possible without compromising the integrity of your tent designs. I think there would be quite a lot of interest outside BPL, too; there are a lot of stove and quilt and hammock design projects out there on the net, but no detailed tent design projects that I know of.
Just some thoughts as I get ready for work here!