When first cutting a recorded interview, usually there is no need for selecting and dragging regions. The main activity is selecting areas for editing, splitting areas and cutting. However, the primary function of the mouse button is still the selecting of regions - you have to go to some empty place (often the only option is the thin area* separating two tracks) for the cursor to change into selection mode.
So it would be very useful to have a shortcut (like SomeKey+mouse drag) to put the mouse cursor in selection mode, or even a dedicated Selection Mode, when only the selection cursor is available.
*Support informed me that actually the whole lower third of the track areas switches the cursor to selection mode - thanks for that - however, the idea of the above mentioned Selection Mode still seems helpful.