In the video it looked like you were using a progressive press. There is nothing wrong with them per se, but they do take some getting used to in order to seat your primers correctly, especially since it's not easy, or expedient, to pull the cases out to check them in the middle of the operation.
Lee has come up with many great ideas that are based more or less on their products shortcomings, so don't take it the wrong way. Also, there are many opinions when it comes to reloading, mostly due to people looking for short cuts, so what is "right" or "wrong" is somewhat ambiguous. But please don't stop the inventing, for whatever reasons you do them. If it weren't for inventors like yourself, we would still be loading with tong tools. I'm sure as your experience at reloading grows, your inventions will grow too.