Version:            (using KDE 4.2.2)
Installed from:    Unlisted Binary Package

I think it would be useful that when you're dragging files, and you have the location bar in 'navigable mode', if you drag those files to a "directory" in the location bar, that directory should be opened.

For example, you are in /home/user/Documents and you want to move some files to /home/user/Pictures. You can select those files, drag them to the 'user' part in the navigable location bar, keep the mouse in that position for a while, and then /home/user is opened. Now you can easily drop those files to the Pictures folder.

In addition, I think that the same feature would be useful with the Places panel: you drag some files to a place in the Places panel, keep the mouse in that position for a while, then that place is opened and you can drop the files in the desired folder.

This behaviour is applied in the 'files part' of Dolphin's window (I mean, where the files are listed). You can drag some of them to a subfolder which is contained in the current folder, and after keeping the mouse over the desired subfolder it's opened and you can drop your files anywhere.