I'm building a new version control forge around Jujutsu :). I think GitHub is pretty bad in its UX and I want to build something that is a) more opinionated than raw git; b) optimised more around team usage than GitHub is; c) uses nicer algorithms for diffing, merges; d) can be scaled slightly better than Git (in the context of entire teams of developers).

Essentially taking a lot of the good ideas already out there and turning it into a coherent product.