This is supposed to be what backports is for, but it’s very much a volunteer effort. It would definitely be good to see the Debian project commit to supporting

This is supposed to be what backports is for, but it’s very much a volunteer effort. It would definitely be good to see the Debian project commit to supporting a set of leaf packages on a rolling basis in stable. Fragmenting the project in this way might just be too much work for the maintainers though. How many different Debian installs can you realistically support?