Usually, I edit the velocity of each note of a chord. In a piano part, for example, this helps to make the melody emerge, or make a chord more even.
Unfortunately, the way velocity is represented in Play mode makes access to individual notes impossible. Velocity is represented as a vertical bar, hiding everything behind them.
I would like if velocity could be represented as free horizontal lines, as when a digital VU-meter leaves the peak shown for some seconds. Only peaks are shown, so you can easily access any other peak relating to the other notes of the chord.