I must say I had the idea to collect such information on how many pts for stoning each bug-yam-alien-spinner, and gems, mines, key, ... but never got determined enough to do it systematically. I must have hours or recordings that I could play to figure this out... but it's much more fun to play the game when I get time for it
Maybe what I'm missing most is the mine counter. In many levels, I just can't keep stats of how many mines I have left, and this screws strategy