Agree with everything in this post except part of number 3 in your list. What you are describing in my experience is what i seem to see with higher OPI (which seems to actually just trigger better/longer press coverage that has animations that look like that). DPI to me seems make the DBs react a bit better to a ball in the air. You and jaredlib both have more slider experience than me by far, but have you tested the two penalty sliders for PI separately and independently? Seems people always like to group them together. Maybe I'm wrong about what it seems to do though, it doesnt have a huge effect so its difficult to tell sometimes.