I don't think the playoffs are really a concern unless we get absolutely decimated by injuries.
Things have gone about as badly as they could for us out of the gate, and we're still sitting at 9-9 with the 7 seed, just 3.5 games behind Philly. I think there's a pretty good chance we still win the Atlantic Division.
I also think that the prospects of winning a title are small; however, as Forsberg pointed out in his chat recently, if things all align correctly, I still think we have an outside shot.
Now would it take several small miracles for this to happen? Probably. But I think that when this team is operating at all cylinders, it can take any team in the NBA to 6 or 7 games. And if they can go that far, who knows what could happen in any given series given their championship experience? Maybe Ray goes nuts in a Game 7 against the Heat and hits 10 threes. Maybe Derrick Rose dislocates his elbow in Game 3 of the series. Maybe Kevin Durant blows out his knee in either the Finals or regular season (like Perk or KG) and can't play.
Are these things remote possibilities? Perhaps, but they've all happened before in Celtics games (though to the Celtics in options 2 and 3). And in this crazy and condensed schedule, anything really can happen.
And while I wouldn't like rolling the dice on this normally, I really am not convinced that DA is going to get anything more than a bunch of overpaid role players for KG or Ray. And taking on 23 million or 10 million dollars worth of good-but-not-great players is no way to start a rebuilding process.