Ecu: It's interesting how different platforms feel about "chipped ecu's", they are popular among others. Not sure if the coding or whatever on the mazda ecu's are difficult to break or what but look at the "empire" Hondata has built of course i guess thats a little different since most of their stuff is tunable but not all of it.
So Adaptronic seems popular "down under" so I'm assuming it is well supported by tuners there?
Clutch/flywheel: Everytime i read some one talking about a lightweight flywheel and or aftermarket clutch i get anxious and can't wait to install mine. I have had a '04 SRT-4 and '01 Bullitt Mustang with a aftermarket clutch and lightweight flywheel and it makes a big difference.
Shifter: Hum i never had a issue with my Nardi evolution shift knob but mine screwed on...weird. A weighted shift knob really makes a difference, i have the Joyfast tall and love it. Have you considered getting a Miata Roadster short throw shifter kit? Namely the tall?
Interior is gorgeous Daniel! Keep the updates coming!