The BMW/Toyota next generation Z4 already has my theoretical money. Given how FRS/BRZ sales have softened I wouldn't hold my breath for the ultraniche sports car.
There's a reason Miatas get the hairdresser's car reputation, and it has to ddo with the fact that there aren't enough young, impractical, manual driving petrolheads.
Aside: I'm kind of shocked Madison avenue hasn't tried to sell young women on performance cars like this directly. A girl driving stick is always coolandhot.