:-) The HF daughterboard is the only thing that's missing, I think. To be honest, I was hoping for someone to suggest a nice design on that front.

Here is a render of the enclosure (work in progress): https://i.imgur.com/AEYgLxU.png

And of course we agree on the software side! Soapy + GNURadio are a must. Hopefully my driver-writing skills are up to the challenge!