Finally, I implemented a new method for extraordinary faces. In fact, I don't like this method.. I would like to have ability to create surfaces with different control point weights using Javascript interface, but now it is not possible. Michael, could you make it in the next version of MoI? (it will not take too much time, because the engine perfectly supports them.)
But yesterday I found another way. :) I can generate a temporary STEP-file with surfaces descriptions,exactly as I need, and then import it back.
So, I don't need to split an extraordinary faces to parts anymore. :)

Other notes:
High quality switch has been removed. Now preview is always generated in the fast mode, and result - in quality mode.
Also I have removed "Show points" switch. Just double click on title to make points visible.
I still have rare problems with LoadMesh function. I'll check it later.
The script doesn't support opened surfaces and extraordinary triangles (excluding a polar triangles)