On the Mac, .dae is a natively supported file format as of 10.8. In 10.10, if you double click on a .dae file that has cameras in it, Preview will open up and show you your file with a separate “page” for each camera.
I’m generating .dae files in my own apps using Apple’s SceneKit framework, which is how I discovered this.
I was disappointed to see that the built-in Collada (.dae) exporter doesn’t also export my scenes as cameras in the file format. It’s very easy (I wrote my own plug-in to do it), so I’m hoping that the SketchUp team will add this soon.
It makes .dae export from SketchUp infinitely more useful, without much work.
Thanks for listening.