Yes, the overall algorithm will do something much more precise and comprehensive, so it's not like this scoring function needs to be perfect. Still, it matters

Yes, the overall algorithm will do something much more precise and comprehensive, so it's not like this scoring function needs to be perfect. Still, it matters in a quick evaluation so I'm surprised it isn't in there. A few examples come to mind where, for instance, white has a bishop and knight attacking f7 and it's black to move. If black castles nothing interesting happens and white is likely overextended. But if black cannot castle white will win a rook. I can make up a similar situation with en passant, and this does come up, but a lot less frequently. So anyway, surprised you wouldn't toss a few bits in there, at least the 2 for ability to castle by each player.