Thermal energy is what you are trying to remove. Once the oil is up to temperature you need to remove the heat. You have to size the oil cooler to accept the extra flow of a bigger oil pump to have long term advantage. It's like just putting in a bigger battery that holds more charge, once its up to the limit it stays there unless you can get rid of it. If it is a smaller sump surface from which heat can radiate then it can make the problem worse. Unless the other parts oil system are modified then there may be problems. The oil pump bypasses at high rpm, return oil needs to get back to the sump quickly, there have been other Kawasaki big engines that have been modified to do this.
To be effective the oil pump needs to have the same percentage of increased flow as the increased oil capacity and if the surface area of the sump has been decreased then the oil cooler has to be re-sized to take the extra oil volume per minute as well as the lost surface area of the sump. Oil starvation has often been traced to lack of sufficient drainage from the cam and gearbox area.
Drag racing has it's own issues like oil moving away from the pickup, oil pooling in the rear of the cams and gearbox. Flooding the sump is a fix but can suck hp. Somewhere where the oil is pooling under high 'g's' is sucking hp (gearbox) so more oil can make it worse, you must make an efficient return path.
The only benefit to the average guy would be the contaminants are more diluted.