They would be much better that what we have seen for a while. There is no reason to be rebuilding for years in todays NFL. Make some good moves, get a few close wins from better coaching or better luck. If they are able to put together a reasonable offense, which they will this year just with the coaching staff they have added they will win more games.
The offense has some weapons, they just need better schemes and protection packages. The defense has always been a reasonable defense, good enough to win with some help from the offense.
Scheme up the offense better, add a QB, sign TO or another big WR and they will be good. Chan will make them better on offense, that is what he is all about.