If we sign Marner we have to shed something like $5M. Like trade Brown, let Gards and Hainsey walk, and then trade one of AJ/Kap, Marleau or Zaits. The last two guys will be very difficult to move.
If we lose Mitch, now you keep the Browns, Kaps, AJ's, but if you're upgrading the D, the assumption would be the $5M or so we are now under goes towards an upgrade on D. And that's without resigning a guy like Gardiner. So it could be even you just keep Gardiner.
It would improve the future pipeline with the picks but do very little good in the short term.