Thanks for the info, I'm glad someone responded. Bitbucket has side by side diffs, but I think both those and inline difs work fine (just a matter of taste).

I don't think those other features (for me) justify the complexity of running another application. For example, not enforcing LGTMs is a feature, in am emergency, a team member can get stuff done. But if someone abuses that regularly, they loose pull rights (or are fired).