In back, we'd give all those missing props. Not only will adult-sized adults get in there easily enough, they'll find a backrest that reclines a few degrees, almost guaranteeing most passengers will find a comfortable seating position. The front seats also have a memory function so when they're flipped forward, they'll reposit themselves as they were before you opened up the doors to the party crowd.
Since Scion puts the USB jack in front of the shift lever, we found more use for the shallow bin ahead of it. The console's a bit too skinny, and in a skin-flint touch, it's all hard plastic, like most of the dash. The glovebox is pretty shallow as well--but the cargo area under the hatch can hold a few roll-aboards and has a pair of deep bins for rattly things like tire gauges.