Save that talk until after the trade deadline, once the smoke has cleared.
1. "We still think that with the talent we have, we can add pieces and compete next year." --- GMs that really want the trade-able players may think they would have to pay more in prospects for each guy. Fans, however, would be irate, knowing that the team is screwed and is in need of VAST changes.
2. "We suck, this roster sucks, and we need to blow it up." --good luck getting top value for your players.
You shut up, make your trades, get your prospects, and then after the deadline say "these moves were made to rebuild the identity of this franchise. We are tired of spinning our wheels."
"Guess what? I bought you a Hawk and DJ bobblehead on ebay. It even says 'Hawk' on Hawk's hat. Isn't that cool."
---My awesome father