This is a pretty neat article about placing a number value on every pick. If the numbers add up to greater then what you are giving up, in theory it is a good deal for you.
http://www.arcticicehockey.com/2011/...lue-pick-chart
I know the Columbus Blue Jackets do this. With that said, if we traded both our 2nds the value chart would suggest we could get 16th overall.