I think the top 15 of this draft is as strong of any draft in the past 10 years and considerably stronger than last years draft. For the Celtics I think it will be harder to trade up than most think. If they can dangle Sullinger to move up it may be an option but those who think they can move up to 7 or 8 by dangling 16 and 28 (even possibly another pick)... It will not happen..
Summer 2014 and you're saying the same thing about the rookie class that year. 3 of top 7 rookies in 2014-15 were injured. Little early to judge last year or the others.
Anyway, put a couple of comparison charts from Basketball-reference.com together showing Smart's rookie year against the names from 2012 and 2013 classes. Left off Davis as he was, coming out and has proven to be, a franchise player. Otherwise, Smart who was the top rookie going into and coming out of 2014's draft on advanced stats like Box +/- and VORP stacks up as superior on such stats to most of the names you put forth in their rookie years. Advanced stats aren't perfect, but they put a player in better perspective as a two-way player who's not just jacking up shots on a bad team and not playing much D or incapable of doing so.
http://bkref.com/tiny/4LKnJhttp://bkref.com/tiny/gUDjwAs for 2015? Decent draft, much better than 2013 going in. Worst than 2014 .
Top two tiers were 12-13 deep last year (Payton and McDermott). 8-9 (Booker and one of the Euros) this year so far but maybe 10 if Myles Turner rises when he works out. Stanley Johnson and Kaminsky seem to head the next group that runs 10-17 (Turner, Johnson, Payne, Kaminsky, Lyles, Portis, Dekker, Oubre) then Looney, Grant, Hunter, Harrell, Jones, RHJ, and Anderson takes you to top 24 names showing up in every mock's first round. Thereafter draft upsiders and foreigners.