My thought is that since you can checkmate with two bishops, but not two knights (without a blunder), the bishop would have to be worth slightly more than the knight.
by the same reasoning, you can checkmate with a rook, so two knights must be worth less than a rook. so, knight = 2.4 maybe? now, let us look at checkmate possibilities with blunders. even if your opponent blunders, or even cooperates with you, it is impossible to checkmate using just a king and bishop, or king and knight. By contrast, it is possible (if opponent blunders) to checkmate with a king and two pawns:
So, knight <2 points, and bishop < 2 points?!
less than 2 points??
For both:
3+Amount of possible moves at the given position*0.1