Comments on existing version & Suggestions for future versions. If you want a new feature suggest it here. Discussions about beta versions also come in this section.
Somebody already asked it I think, but since Size field is a text field where you can put e.g. "650 + 649" or "650, 649, 700" it would be difficult do use it.
I can try to get the numbers from it and add them, I'll see for next version.
You can do it with a script, you can use the "total discs count" script as basis (I do not remember if it was included with the program, but the script is on the forum) and add the "Size" field parsing.