NextBus works great when you are wondering when the next Metro Bus is, but alot of us dont want or have a phone and would like to know when the next bus is coming. Put the ETA arrival time information on the overhead display sign.
Also, it would be great to know somehow, if the next bus will have space for your bike... I've had to wait for up to three buses before I got a spot!
Furthermore, if you could prioritize the bus over people turning left in front of the busway at intersections (particularly Chandler)... Its irksome (and inefficient) that a double-bus FULL of people doesnt get signal priority over two/three cars...