".dwfX would allow any consumer to view the files (mostly) WITHOUT any software installation or special plug-ins...", is what I should have typed.
Thanks for your feedback. We will provide the ability to download the DWFx format in a future update.
Thank you, sir!
Concering Google Chrome... either I mis-remembered, something has changed or I've already done it on this machine (as a different Windows User Profile which got corrupted & caused Inventor to act "crazy")... I didn't have to edit the registry this time. As I recall the regedit was simply to change a lower-case letter to upper-case. The other part of viewing .dwf(x) in Chrome is that you'll probably want to set it as the default application. This is a little confusing since it doesn't automatically show up in the list of programs to use. You'll find the .exe for Chrome in the Programs x86 folder since it's apparently still a 32-bit application.
Another "secret" about .dwfx (but apparently NOT .dwf) is that the file extension can be changed to ".xps" and viewed (but not marked-up... only "signed" in the XPS Viewer... the signature doesn't seem to "round trip" if you change back to a .dwfx extension). This allows any Windows user who has the out-of-the-box XPS Viewer installed to view the file.