I think when it was launched, the Miata was more the market they had their eyes on (volume) than at Porsche. You're right in that they've had ample opportunity to upgrade the car to make it a serious rival to a host of performance 2 seaters, but Honda doesn't seem to want to play that game. It's funny because Tom Williams from The Garage blog says the conservative perception of Honda in the US confuses the Honda people in Japan to no end because there they are seen as edgy mavericks. That just goes to show how vastly different the US and Japanese markets are.
135i, SGM, Coral, Sport Package, Auto, Premium Hifi, USB/ipod, Apex EC-7s, PPK Stage II