Features I wish GitHub for Mac had:
- A view showing the folder structure
- Ability to edit markdown files w/in application (or Atom integration)
- Ability to send someone a link to a pull request to merge it
- Ability to comment on pull requests/issues
- Stash visualization
- "Open in GitHub for Mac" makes almost no sense when it eventually opens in vim
- Doesn't tell you about merge conflicts, just leaves them in the files.