What's really interesting -- to me at least -- is how you get direct feedback on pressure, temp, flow, and now weight throughout a shot. And how that feedback relates to what is in the cup. And how it informs you of problems in your technique -- grind, puck prep, etc. When I see a trace going wonky (like in the pressure overshoot above), I can see and taste the impact. Without such data, I'd never really know why some shots seemed to pull and then taste differently.