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I agree, a well designed oil pan is always a benefit, even on a street engine. Scrapers can be a grey area for street engines, as they can eliminate most of the oil splash that many components rely on for getting oil at low RPM that don't have direct or pressurized oiling.
There are engines that rely on
splash oiling for lubrication. These are generally pre-WWII designs. Many people will be familiar with air compressors like the IR T30 which work in this manner.
Modern pressurized oil systems
fling oil from the rotating assembly after it has passed through the bearing shells. They do not and should not splash in the oil reservoir. Flung oil is continuously available.
Scrapers can be a grey area for street engines on the basis of cost. It costs more money to put them in place. There are examples of this in Mopar engines where scrapers were developed and then removed on the basis of cost. This was done under the aegis of the very designer of the slant six engine.
Windage trays have also been developed for Mopar engines and then removed for reasons of cost.
Full on dry sumps suck oil out of the crankcase as quickly as possible with no intended oil
splash. They are considered a superior method of oil control versus wet sumps. Dry sumps still allow
flung oil.