I am not sure about this whole lull thing either - but I've only had it a little over 5 years so maybe it's not time yet.
I don't even mod it.
Of course, my definition of 'stock' has changed a little bit over the years. But you have to maintain the car right? I mean some things are just wear items, right? Right. (konis, street/track pads, new leather) Sometimes it is even smart to maintain things preventatively. Plus, as long as you are in there, you want to make sure it is done right, right? Of course you do. And it can still be 'stock' if the parts came stock on an NSX, right? You bet. (6 speed, type s springs, R bars, 97+ brakes and such). Plus of course safety items - I mean safety HAS improved since 94. Its for you AND the other people on the road. You are just being responsible. (HIDs, JDM tails) Plus, you know not everything has to be passive safety. Active safety counts too, right? Absolutely. (swaybars, headers, exhaust). So yea, right after that supercharger then I am done - and the best part is that the car will still be stock*.
I don't know what everybody has to go messing around with things for anyways. Just enjoy it stock.