I'm just starting out, but with my background in manufacturing I just can't trust something to drop the amount of powder automatically on the press without me weighing it. Anything mechanical can fail and make a mistake, especially if it allows or depends on human interaction.
I was just reading a thread the other day where a reloader blew a J-frame Smith & Wesson to pieces. He swore up and down he didn't double charge. It was one post after another of silly non-sensical ideas. He double or at least over charged it…he had to. We see it too often.
I do like the idea of something like the chargemaster or Intelli-dropper.