It would be nice to have the ability to convert a smart list to a static list once you have everyone in your list locked down rather than having to create a static list and import them into a new static list.
I seem to recall this being posted before, but I'm happy to like again in hopes that it moves up the development priority. I suspect that the improved smart list performance capability is going to be required first. Looking forward to the 20x to 100x improvement as discussed at #mus13