[ta8903]

>Linux needs a killer app, not just equivalent-app or "linux flavored" app that does the same thing, a DAW, a font editor, a GIS app, something.

Those examples aren't killer apps because they could be ran in Windows/Linux through these compatibility layers. Linux's 'killer app', if it had one, would be things like better window management that doesn't get in your way, faster file I/O, being able to do more with your hardware.