I think it may be helpful to integrate with the Gerrit review system. I believe the latest eGit supports gerrit. If there are other code review tools that any of you know of it would be nice to hear. The one thing about Gerrit is that it is based on git.
-post on gerrit that an issue is ready to be promoted
-reviewers (recommend at least two) check the changes
-issue is promoted by one of the reviewers
I do not know too much about Gerrit yet, but what I have seen follows this flow (aside from the documentation). Egit uses Gerrit, and I have followed a few issues. The system will not allow a promotion to master unless all reviewers agree and the tests have passed. You can also post reasons for a non-pass of review, then reset the state to require re-review.