Your wishes have been granted my friend, one of our fellows creating the godot engine made a better collada plugin https://github.com/godotengine/collada-exporter
Sadly it didn't get official https://developer.blender.org/D1787
Kushite screenshots would probably help with this, especially since everything was made using blender ^^ except maybe the textures ^^
I'll discuss it with @Itms in Lyon's event