Well, since this has now been bumped, I suppose i'll contribute by saying that I think the important thing is to just keep the information shown in the chart fairly simple just to get it implemented. If it needs to be fine-tuned over time then great, but what i mostly wanna see is a more accurate representation of difficulty besides the .5-5 star rating, because lets be honest, the star difficulty rating should really go up to like 15.
tl;dr I support.
tl;dr I support.