I asked about this some time ago, and Rimu said that it was coming, but I was checking in to see if it's still on the roadmap.

I'd love to be able to mark communities as a favorite so that it is easier to get to in the Communities drop down similar to how Voyager does it. I can find them in the web interface by clicking into the search box and typing the community's name, but it would be more efficient if the ones I mark as a "Favorite" appeared at the top of the list.