Welcome to the Wiki.
What I am noticing is that there is no notion of a Tox Improvement Proposal(TIP), so ideas and vulnerabilities get forgotten in abandonned PRs in abandoned repos, or ignored issues.
I suggested wiki.tox.chat as a place to identify and prioritize TIPs but maybe we can elaborate POCs here. I want to "argue" it out to get to the "best" proposal so work so work can get going on a trial version. developers who know the key exchange mechanisms can bring a lot of the existing codebase to bear on this problem, and resolve wrinkles in the concepts.
Multi-Device DHT announcements: