I agree. The service discussion is likely to get messy enough by itself without unrelated posts threaded in.
It also might stay a little theoretical until necessary volunteers and equipment gather, but planning is good.
It looks like I can move the USB parts into a new or existing topic. Any suggestions before I attempt that?
Device mount detection (USB or otherwise) was my previous idea, but those who want this, look around.
Getting beyond a DIY approach is probably a feature request, so search for one, maybe with DIY for now.