I don't usually have the rosiest of outlooks but I don't think you can do this, not just on the logic but on the kind of message it sends to your fanbase.
Yeah, they haven't been playing great baseball. Will get Devin back, should get Yelich back and those will be some pretty big additions. I certainly don't think the division is a lock by any stretch but if you had to handicap the current odds they'd definitely be the favorite.
Do I think they win an October matchup against the Dodgers or Phillies, no I do not. But as a small market, if you're not going to try to win when you're 5 games up on the rest of your division at the trade deadline, when are you going to try to win?