It's Steph who want the Collada format ;)
There is not Collada part here on the above post: it's a wish :)
For him it's the format who will become the more useful between applications (and notably for 3Dmax, Maya...)
Universal, capable read complex scenes, n-gons + vertex shading...
* Mesh geometry
* Skinning
* Morphing
* Animation
* Assets
* Data validation
....
< File format work can often be pretty time consuming
Sure ;)