Can i somehow display glyphs in the font like i can do in fontlab?
I don’t see the problem. It will show like this. Only if you scale down to much it will hide the Unicode to make room for the name.
Edit: I’m to tired and didn’t read your question properly.
Make a list filter with all the glyphs in the range your are interested in. It will show you how many are missing and adds the option the add them.