Hey @stbischof!
No this is only needed if you want to re-use existing package lists created for Fedora Spins but I don’t think there is a Sway spin.
Thanks for doing that! I held off doing that for now and created the Base variant instead as I know that people who usually use minimal desktop environments also like to handpick their tools / components a lot more that KDE or GNOME users where we have a clear standard offering.
With the new Fedora archive repo, there should basically be no downsides to package layering and building on top of the base image should be easier than building more variants which is something that I am currently reluctant to do as it takes time.
So thanks for doing that but I’m probably not going to work on that for now as I am currently focusing on making the KDE edition official. You can however try to find like minded individuals to start working on an official Sway Spin / Edition in Fedora itself.