Crab
"according to .... AnFi, it is directly proportional to G load"
NO Crab keep up, how can you argue when you don't even understand?
A coning guage would indicate how close you are to the Ultimate Load independantly of RRPM
whereas a G meter would not. It's subtle and not very important, cept if you're designing, where you need to know what Ultimate Coning angle it's worth trying to accommodate. I doubt pilot's really want to be looking at that, although it would be more useful than a G guage.
(1st order, that ultimate coning angle would reduce for DA for example, but would be valid for different weight, g etc)