Good call- definitely worthwhile to see what the Rangers do with their roster. Not sure that they'll buyout any of the 3 you listed, but since they do have a lot of talented guys up for new deals soon, they may look to move one of the big 3. I'd guess it would Gaborik, given that losing Richards would hurt them too much down the middle and they just pulled off the big Nash deal. And good Lord, did Nash look unstoppable last night against the B's- I know that Gaborik got the hat trick but Nash owned that game.
I don't see why Dallas and Boston wouldn't try to retain Ryder and Horton, respectively, but I'd take either guy. I wish KH had landed Ryder when he left Boston- would have been a great fit on the top line.