Hey, I'm working with Filament and wanted to give you some info.

1) Our basic Tap has USB and a few analog/digital pins exposed externally for this type of control. We expect USB to be one of the larger factors down the road and are looking at ways to simplify that path.

2) You sir, are thinking well ahead and in the right places.

Feel free to email us with any direct questions! hello@filament.com