I think it is more likely (and probably smarter) for Ainge to trade down and acquire a future first round pick.
Ditto, especially if the Cs end up with 2 second round picks as well.
Acquiring a future first will also help with potential trades in the future. Ainge is all about acquiring assets.
In terms of assets:
3 non-lottery rookies and a future first > 4 non-lottery rookies.
When the Celtics were in a "win now" mode and looking to get similar talent to the end of the first round but didn't want to be locked into a first round contact, trading down made sense, especially if you had intel that your player would still be there many picks later.
Here I think Danny no longer is worrying about the guarantee of first round picks and since the big time, difference making free agents are all off the board, I don't see him worrying about putting to many prospects on this team. So the better the prospect, the more likely they get on this team next year.
And the best prospects in this draft will be found in the top 20-25 picks. Once you hit the 27-28 player, I think this draft turns from, getting a definite role player to the general crap shoot you see every year at the end of the first and into the second round.
There are 3 possibly 5 All-Stars caliber players:
Anthony Davis
Michael Kidd Gilchrist(if he comes out)
Thomas Robinson
Bradley Beal
Harrison Barnes(though he's more of a Melo type All-Star, selfish scorer with lots of hype)
After that there's probably 20 or so players that will be solid starters to excellent role players in the NBA and have the potential to once or twice be All-Stars:
Austin Rivers
Tyler Zeller
Cody Zeller
Jared Sullinger
Andre Drummond
Jeremy Lamb
Perry Jones
Damian Lilliard
Terrence Jones
James McAdoo
John Henson
Quincy Miller
Kendall Marshall
Terrence Jones
Terrence Ross
Royce White
Myers Leonard
Dion Walters
Arnett Moultrie
After that, I really think that you are taking as big a gamble on anyone else as you are on any players you would normally be seeing in the end of the first or second round of any other year. This draft is deep, its not endless and IMO, the quality depth ends right around 25.