Chess Openings Trainer

Is it possible to create folders in folders in folders? For example: Modern repertoire/Queen's Gambit/GA If not I would like to request this for future updates. Also in edition of the White and Black main folder I would like to add other main folders, like Endgames an Tactics. And I would like to import tactics and endgames from pgn, without specifying if it is for white or for black. To let detect Chess Opening Trainer Pro if it is a white exercise or a black exercise.

I create a folder 'main' with my main openings. Than I also create a folder 'deviations' with deviations. But sometimes the openings have the same name. Than the second opening can not be made. So I want to request to allow openings with the same name if they are in different folders.

I would like to be able to delete a complete folder with openings in one go. For if I want to restart a new repertoire and want to keep it clean. It takes to much time to delete each opening one after the other. Or is there some other way to delete all the openings in a folder in one go?