> Something that looks like a decentralized private tracker; by this I probably mean something that’s based partly on personal trust and manually weeding out any bad actors; I’d be wary of creating something that looks a bit like Tribler, which while an interesting project seems to have demonstrated that implementing trust, reputation and privacy at the protocol level carries too much overhead to be a compelling alternative to plain old BitTorrent, for all its imperfections

I've thought about this problem a lot. Having a federated / distributed tracker but with some form of trust based, or opt-in curation would be amazing.