Create folder on upload form

This would be a nice feature!
I tried to implement the hierarchical select module, which have this functionality. It works pretty well on the file edit page, but not on the multiple file edit page (#1372300: Uncaught TypeError: Object #<Object> has no method 'getEffect') neither on the upload form.
I tried to make a module implementing it on the upload form but it's pretty hard for my poor skills....
Any help is welcome.
(note that this unstable module need to hack media_folder_plus module to modify the way media_browser_plus_submit handle folder...)
That's an ugly work but a good start...