Just flew back from NV to UT and had ample opportunity to use the traffic feature. How about making the yellow/red traffic icons flash - or do something to draw more attention to them. Blue, not much of a worry, but even with the alert info, easily finding the yellow/red "intruder" could be improved.
And as usual, I strongly second EM's suggestion that the traffic box pop up only when there is traffic in the selected range (for traffic alerts). We prefer to fly with the traffic box enabled when around higher traffic areas, but switching between the instrument layouts is a pain. Even on our 8.4 Galaxy Tab, the traffic box hides a significant portion of the map display - especially when zoomed in on approach to an airport. If there's no ADSB reported traffic to display it would be a real benefit to having the traffic box hidden upon approach.