Let's say they go the conservative route:
1. Sign Nate to a one year with a team option.
2. Resign either T. Allen or Daniels (no need for both, offer them both reasonable deals and keep one, I think TA blinks in that situation)
3. Resign R. Allen for two years at ~10 per
Starting lineup of: Perk, KG, Pierce, R. Allen (on a two year), Rondo
Wallace, BBD as big men off the bench
Daniels or T. Allen at the wings
Nate as the backup PG
That's your nine man. Does that team make the playoffs? Yes. How do they compare to this year's team? I'd guess:
1. Perk, BBD, Rondo, Nate all better than this year.
2. Wallace the same as this year - he can't get slower or more apathetic than he was this regular season, right?
3. Pierce, Allen, KG all slightly worse than this year. (Possibility that Pierce and Allen stay the same and KG is actually better with an extra year between him and surgery.)
4. X-Factor: Daniels really under performed since his injury and Tony Allen seems close to pre-knee injury, either of those guys could make a big leap, either option is going to be about as good as this year worst case.
But you'd have an additional advantage of basically everyone having another year together under the same system.
For the rest of the players:
We'll have two draft picks, Sheldon or some other big at the minimum, and let's assume some Finley-eque shooter at the minimum to get to 13. (I'm hoping they can get a combo forward in the draft, someone who can play behind Pierce and a small(er) ball PF, but I hope they take BPA either way.)
I don't see any reason to think that team wouldn't be a favorite to win the division again and I don't see why that team can't make a run like this year's team. Yes there is some risk they any of the top 4 guys during the post season and they are not going anywhere, but I think that's less of a risk than hoping you get a new contending team.
I think they should follow this conservative approach unless a clear win trade or MLE upgrade comes along. Under no circumstance should they "blow it up".