If there's a PR on ~30+ files, and especially if you have to review it a few times, after some changes were made

I would like to be able to review individual files. Example:
1. Look at the file one
2. Looks okay, approve it
3. It minimizes and will not automatically maximize unless changes are made to it. Probably also a badge of your approval hangs around it

This way reviewing big requests will be possible, instead of currency "whew, finally scrolled through it"