Not sure if you are joking or not but that there is the wrong thing to say with a guy who probably love the series as much as you do and want the best for it.
Racing is all about every detail as you can have. The most details, the most immersion you can have.
Try old games such as Race07/GTR2 or now Assetto Corsa, listen to the engine sounds and the in car sounds (suspension noise, the paddle shifter noise, wind noise at high speeds, the rocks hitting under the car if go out of track, the difference in the engine sound position and note from each camera depending in where you are which with a 5.1 is incredible...if the engine is at the back you can listen it right there...etc)...The key is how much immersion you can get when you get used to that which is the closest to realism that you can get...and then you don´t actually have it in the other hand.
I understand you love GT and you will defend it to death...but telling other guy that "go play CoD" is totally out of place...
People like me who wants and cares for better sounds...wants that GT gets better
for all...not just for me...The day we all get realistic engine sounds, we´ll stop asking for it...and you know what? You will enjoy having them as much as I will for sure.
Remember we drive cars...cars should sound like they really are.