adding or deleting elements and assets

[nsklaus]

would it be possible to add and delete elements and also assets from a given theme *.car file ?
for example i would like to remove some assets from ZZZZPackedAssets2.0. but not only there, in other normal elements too.

from the elements list on the left, i would also like to be able to delete whole categories.
for example like deleting Banner_Border or GradientButton with all their assets in the main window on the right.

basicaly adding or deleting whole elements or just single asset.
would this be planned in a future release eventually ?
and i wanted to ask, is there any known workaround to that limitation currently ?