As I was saying in my opening post, wheel fans certainly are an acquired taste and truth be told I'm not sure if I like them or not. I certainly understand the theory behind them and some race teams are using them to this day. Manthey Racing are using them on their Porsche GT3 albeit only on the rear wheels and there are other teams/tuners using them as well. I've always believed in the "form follows function" philosophy so that carries significant weight.
Somehow I'm just not able to visualize them on an NSX and can't get a "feel" for how they would look. As far as being "period correct", I think that they are and they aren't. They really came into vogue during the late 70's-mid 80's but were still being used in the early to mid-90's. Again, they're still in use today. Having said that, I don't think they've ever been used on an NSX, so in that regard they are NOT "period correct" or at least not "manufacturer correct".
I'm still curious to see how they would look. I've been convinced that wheel fans will make a big comeback but even if they do, I suspect that they just won't look right on the NSX. One thing for sure, if I, or anyone here decides to get wheel fans, there's a strong possibility that we'll have the only NSX with wheel fans!