Replace Group Folders by Collectives

Hi there,
we are including collectives into our workflow.
So far we had project based files and md in Group Folders.

Working with Collective helps and is beautiful.
In the Files view, we now have a similar File Tree as in Groupfolders.

Can we move other files than md into Collectives File Tree?
I already tried, without any problems.
My only fear is, that it is not a use case, thougt by the developers and my cause problems in future vesions.

Is it planned, collective is able to handle other files? Would be nice to have a deposit view.