not intended as a personal attack phunkdokta. I'm sure I haven't upset you have I? I'm flatter if I did, cause barpk couldn't manage it

--just kidding-- All of what you have said in here is right, and you obviously know what you're doing. I just think there's a better way. Don't close your mind to the possibility.
You have described the limitations in detail yourself; amount of boost limited by the amout of fuel pressure you can achieve and control, and also limited by what the carb or box seals and float can withstand.
The real drawback of the draw through carby system is that you can't really intercool it. Most of the unlimited category speedboats run drawthrough carby turbo V8's with intercoolers, but it obviously only takes one backfire to turn them into a bomb. But there are ways around that, up to a point.
true EFI is the ultimate for performance, driveability, fuel economy and reliability. But for most people like you and me, the cost of the ECU and tuning is still prohibitive. I'm still after the maximum performance I get get out of what I can afford to do.
Besides, it's much more fun doing it all yourself. I'm sure you and I are really on the same wavelength on that score. Hell, the more fast little 1200's out there the better! "To each their own" is fine by me, just offering my perspective.
Harry