Hmm... if the hubs were a bit flexible (and came in 6 & 5 arms) then geodesic structures would be possible.
Or you use rigid corners and longer, more flexible PCB strips.
Stay tuned
Hmm... but then the overall shape would be a bit wobbly, and hard to keep looking 'round' despite distortions due to suspension points.
Also the strips wouldn't bend spherically, but rather in centenary curves, which could look a bit odd since the overall shape would be a series of discontinuous curves. Unless you did some very careful profiling of the width of the PCB pieces along their lengths, with the middle thicker than the ends so the amount of bend was constant.
Btw, are you aware of the detailed geodesic chord length and joint angles tables (for all the major dome geometries) in the old 'Domebook I & II' ? I have them; if you need them and can't find a copy I could scan parts.
Also google 'tensegrity structures'. These are cool looking. Just begging to be made out of electronics and wire. The wire needs to be non-stretchy; stainless multi-stranded fishing line and crimp ferrules work well.)
One way to do rigid hubs, with straight struts, interconnects and fasteners the same as you did there, would be injection molded hubs with little flexible PCB clip-ins.