This has to be a new idea. GM used windage trays on Corvette engines from the factory. I think the LT1 engines in Camaros had them too.
Btw, if your crank is dipping into the oil, you've got too much oil in it. The rod side clearance is where oil for the pistons and cam should come from. There's a little from the drain holes next to the lifters and some hemorrhaging from the lifterbore/cam bearing/journal clearance but the majority comes from the crank slinging oil from between the rods. A windage tray will not touch that supply.