Look interesting and probably is an improvement. Otherwise, you wouldn't be pondering about it and developing it.
For me, the bandwidth model is (was) a non-issue. I never even tried to understand it and it never was a problem. It might be a different story for new users with a low amount of SP, though.
Will this GC approach in any way force the change of behavior of an average user?
Ps: I love the usage of high-speech in some sentences. Looks like you developers are also philosophers and psychologists at the same time :)