Ask HN:what do you think about the cad market?

Hi i respect this group allot , now my question to you i was looking for dxf online viewer that let me share and collaborate with other users , but i didn't saw any real sulotion for this , there is something in the Autodesk that lets to see it as soom in/out image.but i needed more then that. what do you think about the idea of cad dxf online viewer and collaborating app?