I left Google about a month ago and use Github now. Things I miss:

- the ability to batch all comments in a single send. GitHub has the problem where replies are immediate and don’t necessarily represent the PR state.

- built-in fixes and lints that show up as comments

- the ability to diff between snapshots instead of losing all previous context every force push to a Github PR.

- Github’s diff is really bad for code moving or changing indentation.

- auto submit if tests pass and you have an lgtm. It’s frustrating having to wait for tests that will probably pass.