Many optical disc authoring programs as Daemon Tools Pro also offers the ability to read a disk and make an image out of it or to write an image to a disk.
That’s why I want to suggest it for WinCDEmu, too.
In my opinion, it would be a great addition.
I personally don’t think this would be a good idea. There are plenty of feature rich, well tested, burning programs out there. Adding create/burn support would probably double (wild guess) WinCDEmu’s code base, and go against the very goal of it (be a dead simple ISO mounter).
My suggestion: use ImgBurn in addition to WinCDEmu.