Right now, N900 can either have touch screen feedback ON or OFF.

But I would actually like to only have touch scren feedback on certain parts of the phone such as only when touching on icons, shortcuts, bookmarks, contacts on desktop.

Or even better would be only when pressing an actual "button" or a "selection: and not "whenever touchscreen is touched".
My friend's Samsung phone is like that and that is much better than the N900's implementation.

Maybe even just activate the touch feedback when certain process is running would be awesome. (such as when phone app is running)

Is this even remotely possible on the N900?