Andrei, I don't know if I understand your suggestion.
Are you talking about Browse by: (under Content) choices? If so, the choice now is Artist. I cannot drag albums inside that left pane. I've tried, with no success. If there is any difference in data, I haven't been able to detect it.
I need more information, Andrei. Please remember that this is your creation, so while you're intimately familiar with every aspect of the software, many of us are simply trying to learn how to use it properly.
OrangeCD Catalog is very elegant software which does most things beautifully and perfectly, but it provides moments of frustration, too.