Same day moves can be a pain in the ass because of the way Yahoo implements it. I don't particularly care either way, but I'm not sure that it's an improvement. Now if no one in the league has opposition to Fantrax, we could move the league there and that would probably solve the same day move issues in Yahoo.
Spanky had excellent goaltending, which caused him to take all/most of the categories there every week. Combine that with players who get a lot of hits and blocks and you win a lot of matchups. He definitely benefited from the volume of moves, but he almost certainly makes the playoffs even without them. It's also fair to point out he focused on more non-traditional areas (such as hits and blocks) as opposed to getting caught up with goals.
We can't add weighting to the stat categories. At best we could add additional stat categories for offense, but it already is weighted quite a bit heavier than goaltending and additional options that don't result in pure randomness are limited. I guess we could add actual points in addition to goals and assists to prioritize actual scoring (not sure if that's what you meant), but aside from that the only real additional option in Yahoo would be PIM.