I think that Danny is using a similar formula as last year. He has his core of players that he knows he can rely on, and then instead of surrounding them with mediocre veterans, he is surrounding them with a lot of unproven guys with high ceilings, hoping that some of them can step up, and make them even better than they would be with the mediocre veterans, with the knowledge that he could try to replace those who didn't pan out at midseason.
Last year the guys they could count on were Pierce, Allen, Garnett and Posey. Then the rest of the guys were all question marks.
Perk was the closest to a sure thing, because he had some decent experience, but was never able to really put it together and stay on the floor long enough to be counted on. Rondo was a MAJOR question-mark playing arguably the most important position on the team (starting PG). They had a backup PG in House whose ability to play the point was heavily questioned. They had a backup Center who was a constant injury risk. And their backup PF's were a mediocre veteran, a second year guy who looked completely lost in his rookie year defensively, and an undersized/overweight rookie. And they had another backup wing who was coming off a major injury, and had questionable decision-making skills.
Out of that, they had three guys come up as jackpots (Rondo, Perkins, Powe), with Davis, House, Allen and Scal breaking even, and Pollard busting...but they replaced him at midseason.
This year isn't much different. They know they can count on productive minutes from Pierce, Allen, Garnett, Rondo, Perkins, Powe and House. So they actually have more "sure things" than last year, and they are just hoping from all of the young guys/injured guys they have, that a good percentage of them break even, and a couple hit the jackpot. If not, they will try to roll again at midseason.
The pieces might be slightly different, but the formula is very similar to last year.