Do you already have videos about such systems? I know about first flush systems, and they are super clever, but I'm keen to know more about filtering out things from the roof itself.
Discussion
I don't have any videos on filter systems yet. First flush systems are clever but have a major flaw which is that the weephole clogs easily and is right where debris is supposed to collect. A there is a downspout diverter that I am fond of that does a pretty good job of filtering out debris. https://youtu.be/bAvU9aUp4ZE?si=DKqQLSirtsck7g1A