Hi Daniel
About my experiments:
Quoted from https://moodle.org/mod/forum/discuss.php?d=465418#p1870244:
One point though to avoid a wrong impression: We are working with those schools at the "must have" level, i.e. a Linux PC with a good screen running education software locally on Linux. We don't have immediate plans for the the other, nice-to-have, levels. The off-site Moodle is just a thought, a possible use-case, that materialized during this rather long exchange the presentation in the OP initiated.
So a thought, since I know places first-hand that would profit. But as others are pointing out, not an easy job.
About bi-directional information transfer:
From the center to the satellites is obvious. The question whether one-time or repeatedly is being argued. From satellites to the center is even more arguable. As you pointed out, there are use cases. Others say, No. Admittedly, this direction is technically more challenging. With my usual Linux admin work, also managing Moodle and actively participating in the MoodleBox forum and testing, albeit in different, first-world, scenarios, I was thinking of a simplified work-flow. I don't think it is a bad idea. You see the others here are having their own work-flows. So this simplified work-flow could still be useful as a greatest common divisor for many.
Yeah, the challenge is exciting for the technophile. Not my top priority - you know where it is [1] - but who knows.
[1] How to clean up a site with massively duplicated question categories?