PIR isnt used by anyone outside of Europe (in terms of NBA, NBL, dunno about asian markets), so there is going to be a cultural barrier to overcome there. But yes the forumlae is very similar to EFF.
BB doesn't collect 'fouls drawn' stats at the moment though, so that would need to start to be collected, which im sure is possible, but its just another thing to impliment.
anyways... SOMETHING would be nice :)