For our team I wanted the ability to easily add/remove items from a revision. Unfortunately the revision editor seems to be in a state of flux right now. It's not easy to add parents without grabbing the children too, and removing items is very difficult.

So here is the workaround that is going very well so far:

1. Create a secondary Umbraco instance. I call ours the "Prep" site.
2. Any time you have an item you wish to add to the revision, use Courier to send it over to the Prep site
3. If you wish to remove something from the revision, just remove it from the Prep site
4. When you are ready to package the revision, create a new revision on the Prep site and just choose "Package All"

If you wish to maintain multiple revisions you can simply create more Umbraco instances. So far I've been very happy with the simplicity of this approach.