i hear lots of complaints about fbx too.

they didn't try that long. the first complete collada version (with full animation support) is only a few months old. collada has a lot to offer for realtime 3d over fbx. like shader (hlsl, glsl, cg) and material support, physics setups,... if i remember correctly sony originally started the collada project for playstation3 developers.

...
maybe conitec could also support the ogre3d format. just kidding... but they are supposed to have excellent exporters for many tools. (they got free 3dsmax and xsi versions for developing exporters.)