Firstly sorry if this has been suggested before, I can't tell as the board search function now only allows searching on words over 4 letters long - which is a bit limiting when you're searching for DDP, ISO, CD, DVD, Etc. !
The only time where I use any other burn software now (as ImgBurn is so good) is when I have to create DDPs or write DDPs to a CD/DVD. Looking into DDPs a bit more I discovered that the DDP specification was free if you fill in a form:
http://www.dcainc.com/products/ddplicense/index.html
It'd certainly be nice if ImgBurn had DDP 2.10 support, and would be something plenty of companies would pay/donate for.
Anyway something for you to mull over.