Too much choice

You don't need "10 more packages".  You need once source package, 
repository servers (ie, websites) and a few automated build scripts.  Then 
you need to supply yum and apt uris to users.  It's actually much easier 
than having to write an applet that sits in the windows systray and 
monitors for updates, informs the user, downloads them, etc.  Even on 
windows, you have to worry about x86, x86-64, intel, amd, vista, xp, etc.  
It's just that on debian etc., the issue has been solved.