In case the answer is yes... here are some.
The tent (sans the side walls still) went up again yesterday, for another test standing in the garden. While I am able to pitch it single-handedly, it is certainly much, much easier with somebody to help. I danced with the tent on my own once in the afternoon, and we put it up again together in the evening to measure for the side walls again (measure thrice, cut once, or something like that) and check which constructive details needed some more work or a twist. There are quite a few of them (that's the bad news), but the good news is that the tent seems to be moderately stable already in its not-quite-finished state, without the side walls in (which will add stability) and without any pegs and lines (which I hope not to really need, but we will add them just to be sure for good weather and to keep things from flying away in bad weather).
That's how it currently looks. The front still sags (something which I hope to remedy today), and the rolled-up front flap needs some fixtures to serve, half-rolled up, as a projective roof.
And another, very important piece of good news: I seem to have found the right dilution for my waterproofing venture of the cloth - I will be going with water-based sanitary silicone rubber, since I finally found out how to get a testing scrap absolutely waterproof after one application.
And something totally not related to the tent-making saga: We had a friend visiting us yesterday evening, and I made good double use of our chat during the evening by knitting along. Which means that I got a good bit further on the thing on the needles - and here's another teaser pic of it.
I love this structure!