I think the best way to make the boarding go faster would be to make the waiting room mirror the plane. Have all your seats assigned, and then when they call out the sections, you're already in order.

These changes are not of trivial importance to airlines. Saving 30 seconds on each flight adds up very quickly.

PS While I'm on the topic of things someone should do: Farecast.com or Sidestep.com should add in an environmental impact estimate to each flight, so when you're buying a flight, you can compare the environmental impact of a multi-leg flight with one that goes directly.