Low priority, but would be nice to have: the option to create self extracting archives for Windows by prepending 7zS.sfx and the config (;!@Install@!UTF-8!
Title, RunProgram, etc.)
At first versions of Keka I've think about this option, but as I don't see the way in Mac I forget about it.
Anyway I will take a look how hard to implement it (think it wasn't so hard) and make it notifying it's just for Windows.