At a small scale: I could imagine a framework where I, as their PI, would reward proper work with small incentives. Or them, paying each other small amounts for daily tasks they help each other with. Some carry more burden in the group due to being native speakers, while others are not. The former need to do more admin stuff for the latter. It's kinda on a forced voluntary basis, so this could alleviate this without formalizing it. Also, not necessarily for the v2v aspect, stepping away from the Telegram communications within our group would make it easier to keep track of certain interactions between group members by having it like a forum here available for posterity when turn over happens in the group.

At a large scale: I could imagine larger private territories for all people working in a certain field. It would be like a stack exchange environment where value is rewarded. There might be reasons to consider these as private, such as less requirement for moderation due to outside spam, competition with other groups, IP conflicts when things require patents before being broadcasted, avoiding conflicts between pro and antivaxx people,...

My reference point is to have things always in the public, but I'm sure people will find reasons to require E2EE cases if the SN model reaches a certain critical point.