I started working on one, because I have a U can do .46.
I started with the tangent, and made it larger, but still cant get the flight caharacteristics anywhere near close.
I think with G2 its always a compromise. You either have a plane that does good hovering, or another that does good waterfalls, or another that does good pattern. You cant seem to get a plane to do all three.
Even some of the larger planes I d/l that other ppl set up, they hover nice, or do good 3-d stuff, but if you want to fly it like a regular plane, its not realistic. Its like flying a feather.
Carlgoldberg extreme is about the best plane I think so far for this stuff.
A good starting point for parameters.