Ashley Construct Classic had 3D object plugin, so why everyone loves 3D object which is rotating like a planet.
It doesn't mean 3D is better than 2D, just are part of graphics, i personally believe 3d object would be potential for C2. I'm not talking full 3D with cameras, just 2.5D
http://www.kevs3d.co.uk/dev/html5logo/
Isn't beautiful?
I don't know why you wouldn't add 3D object, so what if you can beat game maker?
Find 3D js libraries what it suits your needs, you judge them, some libraries support WebGL or Canvas
http://jster.net/tag/3d
If is not possible, then we will understand the reasons.