I'd rather see X3D get a proper DOM: <a href="https://bugzilla.mozilla.org/show_bug.cgi?id=300874" rel="nofollow">https://bugzilla.mozilla.org/show_bug.cgi?id=300874</a>
In the neuroanatomy scientific community (and in the medical in general), we CAN'T WAIT to have a proper interactive blender-like 3D viewer in-the-browser that just works. All VRML viewers turned out to be horrible, or just incompatible with Blender.