I'm with you, I'd like to see futures graded as soon as a team or player has clinched. That sometimes happens at the smaller places, but at the mega-joints (sportsbook, greek, bodog, etc.) they're usually so busy with the daily handle that they don't have time to grade futures until the computer spits them up on their expiry date.
Nothing drives me more nuts than when I have to let a profitable opportunity sneak by because my capital at that book is frozen in a future that's already a winner. It didn't used to be a problem at all, but in the post Neteller era, moving money around is a real pain in the ass.
Fight the power, brother.