Elite Dangerous is a 'proper' game, almost. It has it's own set of faults which may take years to iron out (it is not a polished game). However, it is amazing to play it in VR.
Other games, like fruit ninja, and others are very Arcade, and like you said seem to be mini games at best.
What VR needs is for it to be backward compatible with 3D technology, as I've played games like Dark Souls, Divinity and WoW in 3d and they are amazing. While not true VR, it gives you a use for the helmet in almost all games thus access to a huge back catalogue. It would be like the PS4 being able to play all the PS3 games. While not utilising all its features, it does kick-start the platform with a large catalogue of games already out there.
I've used the Oculus to create virtual "floating" screens, there's no reason why that floating screen can't be a 3D image.