Having worked around many charities and small groups, there’s an endless list of unique requirements that these organisations have (as you mentioned, dual control, rotating boards of people with access, etc.). Given Monzo’s direction, I don’t think they would be in a position to offer these types of accounts, it’s just a very different type of account behind the scenes to Monzo’s aim of offering the best personal current account.
As for loyalty integration, that’s already on the cards in the roadmap. Still a bit too far out to know what that will eventually look like though. Got to get current accounts out first!
Having said that, Flux have got some concepts up for comment in this sort of area.
On the subject of non-card contactless devices, that doesn’t seem to be in the plans right now, though the community has brought it up before.
Monzo cards for kids is another subject that has come up before, one of the early hackathon projects aimed to do exactly this!
Based on conversations with the team, it doesn’t sound like Monzo are currently thinking about offering that functionality themselves, however it sounds like they would be open to a 3rd party building those controls on top of the Monzo API.