My aftermarket setup is probably better for a low center of gravity than the stock system-- it's essentially only one sub in the footwell and two speakers in the doors. There is no cutting or modifying the doors and it looks 100% stock except my aftermarket head unit, the speakers and tweeters both fit under the stock cloth in the doors and the crossovers are mounted on SOS door panels. it sounds realistically 5 times as good in terms of sound quality and has hundreds of combinations of adjustability for the equalizer, so you can tailor it to fit anyone or any type of music. It wasn't even that expensive since the price of all the equipment has come down tremendously but it was probably at lest $1500 to replace everything- whereas it would have cost at least $3-4k a few years ago. But you are getting new equipment w new life cycle cost not equipment that is past it's useful life cycle.
+1 - completely agree....I'm in my upper 40's, love quality sound...at home, and in the car....I don't listen to exceptionally loud music, but I do like musicallity (full range, including feeling the bass notes, great imaging, and crystal clear vocals-probably the most important aspect) So, although I can see the point of the OP that the OEM system is fine, which it is, there are ways of improving it....just the same way as the 290 OEM HP is more than adequate , it can be improved upon if desired.
FYI - of all the vehicles I've owned, my 1995 Legend Coupe Type II (which also had a Bose system) was the only system I felt I did not need to change, it was really good....I am guessing it had many of the same components as the NSX, both were of the same era.
So, I think for many of us who took the counter - point of the OP, we're not saying its bad, we are saying it can be improved upon for those who want it....call it a performance upgrade of a different type...