Leddy can still play 22 minutes a night and if he's paired with a good defensive or 2-way RD I would expect his metrics to improve. Trading him with 50% retention might get a 1st. Without retention I would think a 2nd and a 3rd.
Namestnikov and
Jarnkrok are similar utility players. Both are pending UFAs and similar in age and career stats. He would be a solid depth add for a team out west that might run into the buzzsaw that Calgary has become. I don't think it's a crazy ask for a similar trade.
Stecher is likely gone for a 4th or 5th. I'd even take it if the pick were next year.
Bertuzzi would take a haul at least similar to the Hagel trade. And even then I still don't love that move. I would want an A level prospect, a 1st and a 2nd for Bertuzzi.
I don't think Detroit entertains trading Vrana unless it blows them away. He's cost controlled, just coming back from injury and will be able to have a role in Detroit. Same as Bertuzzi, but maybe no 2nd.