No, your theroy has one simple flaw, it would only apply to a pressurized intake. The TB will only take what it can. The stock intake TB connector is restrictive and thus the TB has only so much air.
The stock intake also slows down the air velocity due to its unsmooth design
If you remove a TB, and connect the 90 degree L_intake Elbow, you will see that its not as you say. The airflow will follow the outside of the 90 degree elbow and thus creates a direct shot into the TB which the stock intake messes up due to its flatspot.
Connect the two parts, the stock connector anr the 90 degree one nad you will see that its actually less condusive to what your saying.
I spent months on many designs and tests.
There was no gain at all as long as the stock TB connector stayed there. Adding a K&N cone to the stock intake did nothing(dyno proven). The only thing that helped was replacing that part. I would have gladly used the stock TB connector becuse it would have saved a lot of fabrications.
Even a 68MM TB does nothing with the stock intake tube.
Also the Stock airbox, with 2 2" holes in its bottom flowed just as well as a K&N cone filter.
I also tested 4" 3.5" 2.75" and 2.5 inch intakes, the 3" was the design that provided the best gains.
The best idea I have heard, is someone sugessed puting the 90 degree elbow off my intake design on the K&N Intake, I suspect that combination would rock!!
Peace, trying to help here.