Yeah I mean if you've got a foul happy guy and you wanna put your best reasonable backup behind him that would probably make the most sense...
For injury proneness, minutes played isn't really the way to distinguish how likely an injury is. It's offensive touches. Basically, most injuries in BB happen off fouls or flagrant fouls, the players who get the most offensive touches will draw the most fouls and thus have a higher chance of injury.
I think if there are any other "hidden stats", they aren't relevant enough to go digging too deep into. Even if you somehow reason about figuring them out, they won't help as much as your primary stats will and likely won't help much in the long run. The only reason I bring up aggressiveness is because its the easiest one to spot. That's just my opinion however on the concept of "hidden stats", you may find others who have spent many seasons looking into it.
2x NBBA Champion: S55, S56. 3x USA Cup Champion: S54, S55, S56. WR for longest home streak ever at 11 in Season 47.