i think i get where you are coming from. perhaps i am just conditioned by the way HD does it on the stats page, where its your stats, opponent's stats. i get where you look at something like, opposing team fouls, OREB, turnovers, BLK, as being stats of your defense - they are sort of more that, than your offense's stats. but OREB, turnovers, fouls, of the opposing team, definitely take into account stuff happening on both ends of the court. so i just kinda translated that 'offense/defense' to 'my team / theirs', and blk was the only outlier there. but i think i can see it your way, too. opponent stats is a bit misleading itself because its all your opponent stats when facing you, only (i believe), with opponent's stats when facing anyone, down in their section. i guess i'd struggle to label that clearly myself?
TS, i suppose the main thing is that is sort of an already defined term, where 0.44 is, i believe, the standard definition (never seen .475 myself but i believe you that its out there! i googled for it yesterday, lazily, didn't find it - i suspect there's a good reason someone somewhere might use it though?). i guess i would generally expect that anything labelled TS / TSP would be following that 0.44 number unless otherwise indicated, but, i could be wrong in that assumption. i have definitely myself tweaked the 0.44 when i've calculated my team's offensive efficiency, as foul drawn are definitely not accounted for value wise in TSP (it is not really intended to though i suppose). i usually would do that in a column not labelled TSP though, even for myself. perhaps .475 is an updated version of the .44 based on more modern stats, or something? anyway mostly was curious. its prettty nit-picky, really just figured while i was looking, i'd mention it.
pretty cool tool overall! nice job