Everything look really neat!
Can't wait to see them capturing!
valor What is the state of the v2.8 plugin. Is it in better state than v2.79?
The v1.0.0 version of the addon (compatible with blender 2.8x) is still WIP, you can follow the progress in this thread (we recently published a video where you can see where we are standing). The short answer is: this version still not capable of receiving real data from the KCeptors.
The current one is v0.1.0b which is kind of basic, not always stable, and not-so-easy to use for newcomers to blender
valor Could the problem have been due to missing Python dependencies
It shouldn't. The addon ships with osc4py3 included. If it wasn't there you would have seen an error when activating the add-on ¯_(ツ)_/¯
What did you use to draw those RJ11 wiring diagrams? they look great