Thanks for the positive comments guys
The Blink package is excellent and they are a really good outfit to deal with, not the biggest or flashiest 'tuner' out there, but they know the MX5 really well. I think you really have to *want* to stay naturally aspirated for their package (or the parts that I've fitted) to make sense though, if its just a numbers game then adding boost is the way forward.
For some the appeal of an mx5 is the light weight, the simplicity of the thing (relatively low grip, lots of feedback, balance over outright pace, and the whole roof down experience), and staying NA keeps the linear response to suit - throttle bodies just sharpening it up, adding a bit more sharpness, noise and character to the car.
If I was starting over though, I'd find it hard to resist the Rotrex based supercharger kit that Blink sell (developed by Corten Miller), now that drives just like it has a bigger engine - the rotrex supercharger gives a very linear power delivery (as the boost rises at a linear rate as engine rpm increases) and still means you have to rev the car out to access the power, with no lag or hesitancy. The cost to convert would probably end up being in the same ballpark as what I've spent on mine. I drove their demo car with 290bhp the other week, that level of power in the mk3 with ohlins suspension is an absolute blast.