I can't understand any argument for bringing up Hackett if we move Halak. Hackett is still developing and is much better off in Rochester growing with the other prospects, making a playoff run than he is getting called up to back up Enroth for a couple of games and playing with the worst team in the NHL right now when he probably isn't even NHL ready based on his numbers this season.
I am in favor of moving Halak, but I don't want his value to be diminished because we need a backup goalie in return. The sensible thing would be to claim Dubnyk because he only has 1 year remaining and would be a stopgap just for the rest of this season.
This increases the return in a trade involving Halak & Hackett can continue to grow in Rochester instead of ruining his confidence from playing with our team during this season.