Fuel injection is one possibility that's perhaps too far away, but what about electronic in flight mixture control using exhaust temp
sensors and rpm readings the way OS a few years ago applied in it's 140.
Or isn't it possible for manufacturers to provide for those "solutions" in the form of a box/airfilter to screw on the carb in stead of leaving it to the mercy of the modellers creativity or should I say fiddling capability which, and it should be said, has it's charms too.