I love using the left and right arrows in combination with in order to select parts of the track. Combining the functionality with is great in order to correct/re-adjust the boundaries.
In addition, I would love to have the new functionality of + left and right arrows in order to move the selection.
(I often cut parts of pre-defined length out of the tracks and I do this at different track positions. So a simple keyboard shortcut would speed-up my workflow.)