> Some "advance(?)" users disable it anyway, less advance users don't know why
> their apps fail while app developers ignore it.

Which apps fail? The majority of apps run unconfined. There might be
bugs but generally SELinux just  allows apps
to what there are supposed to do and nothing more instead of leaving
apps just do everything.

Fedora Bugzilla has a nice list with applications/programs that do not work as have to because of SELinux
 

> Moreover the latest bug found on Fedora 20 with SELinux/Scriptlets made the
> recovery totally impossible for many users,
> and it proved (again) that SELinux isn't a really good software for desktop
> and desktop users.

That's a bug ...  "we hit a bug so disable it" is simply wrong we
should find out why the testing failed
to catch that bug and improve that instead.

This is not just a bug. This is one more bug. There is a constant series of major bugs since Fedora 15 (when I started use Fedora).
When a software isn't working for so long, try to fixing it is not the only direction. Specially for users.

Anyway, I just brought up something I consider not good for Fedora.
I guess you know better what to do! 

- alex