The other thing I'd like to see is context on emails in a conversation thread. So if I reply to a comment you've made, it would be great to see the comment I'm replying to IN the email itself (or at the very least, the last comment on that line, if there are multiple comments).
A lot of times I'll get an email comment and have no idea what they're talking about till I click through to go back to the conversation thread
Please do others a favour and don't reply to GitHub comments from email! Many people, including myself, will edit a comment a few times after publishing it. So the comment you're replying to by email would be outdated.
I've gone so far to disable email notifications completely. Which is another win for me because I can't stand being blasted with emails all the time. It's like a never ending to do list which builds up extremely quickly.
A lot of times I'll get an email comment and have no idea what they're talking about till I click through to go back to the conversation thread