I think pull requests are awesome, especially where you're making a 5-20 line change on some really important bit of your site. It's really simple to see what's changed and have colleagues do code-review really quickly.

But when you're implementing a major feature, it falls apart. Today, I had to code-review a pull request with 195 separate commits, a 3000-line diff and a combination of css, coffeescript & ruby. Pull requests become pretty useless at this point.

Sure, you can do intermediary pull-requests, but at the end you're left with this huge beomoth and no idea where to start. Intermediary diffs could be the answer.

Perhaps also the ability to filter the pull request (eg. don't show me the CSS)