Thanks Michael for your reply :)

I'm happy to hear that the "original" targets of V4 are now on your radar again!
Good news!

Please, when you will put your hands on it, please avoid to waste time doing a "middle-ground" solution like the one with "folders in style".

Instead, please go ahead with a TRUE "instancing/parenting/grouping" feature, natively built into the Moi's object system.

Have a nice day.