Wouldn't it be fun if this became an option in the designers' minds for the 718? Seems it was seen as a solution in the past at VW for at least the GTI (and perhaps the new Golf R). Seems like I remember Ford doing something like this in the past as well.
"It sure will sound faster, even compared to an S with the Sport exhaust. That's because the GTS is the only Boxster/Cayman to get what Porsche calls a sound symposer along with the tailpipe butterfly valves. The symposer routes sound from the engine's intake to a vent-like grate behind your seat. Yeah, it's a sound tube, but it's the best sound tube I've ever heard. And I was already sold on the basic Sport exhaust before this improvement."
i had a "sound symposer" on my MY2000 S; it was called a snorkelectomy at the time. the sound that came out of the left side vent was intoxicating. everyone loved it.
-- MY 2000 S, Ocean Blue, Metropol Blue, Savanah Beige. Bought June 2000 - Sold May 2010