It would be nice to have a possibility to tag rules and data elements, like you can tag post here in the forum. With this it is much easier to search for rules and data elements, especially if you have more then a few of them .
Labels is one of a couple different features that DTM has that hasn't made it into Launch yet. We will add notes, labels, and several other things to get Launch to feature parity with DTM. Those are scheduled to happen with the first big releases that will happen after Launch goes to production.