I've been working to improve the upstream package compliance of Lutris, since it's an Ubuntu native package. The current state of my work can be seen here: https://github.com/lutris/lutris/pull/2476
In case this will be merged for the next version, I will upload a version will all the necessary Debian specific changes to salsa and ask for a sponsor. However there's still more work to do and any help is welcome, there's a TODO file in the debian directory if someone is interested, but really any review is welcome. Regards, Stephan