i like the idea, i think the 3pt% is already covered though, both on the player page and the team page -> stats tab?
what i did when i wanted to see those stats (TSP, points per minute, etc) was copy-pasted the team page -> stats -> totals (slider)... and then dropped that into an excel sheet. once you set up the formulas you want in the columns you want, you can copy paste a new team in in about 5 seconds. not exactly ideal but might get you where you want to go.
i would like to see more stats too, but would kinda be interested in stuff like +/- more than things i can directly calculate. im not sure what else falls in that bucket but i seem to think there were a few things that sounded pretty interesting. it would be nice in the game results popup if they added % of def and off reb to the bottom part which is mostly useless window dressing, even though it is directly calculable, because it is by far more useful than the totals and i've had to hand calculate that one a thousand times.