Hamilton and Lucic

Or Lucic and Hamilton.  LOL
Let me start by saying I am, as usual, going off a stream of consciousness, having just heard about the Lucic trade as I was going to write a blog about the Hamilton trade.  I know nothing about the other players involved in these trades, though it appears the value the Bruins got in return was the draft picks.
So let me get this straight:  Not long ago the Bruins had worked magic and become something very rare in pro sports -- a team at the top with high draft picks.  They worked their magic and ended up drafting Tyler Seguin and Dougie Hamilton (and we won't bother saying that the Seguin pick comes about by trading away another very high draft pick.) 
So are we seeing a trend here?  Absolutely we are.  We're seeing a team that gets high draft picks and doesn't keep them.  Does this mean they're missing the mark with who they draft with those picks, how those players are then developed, or both or neither (though I don't think neither is really possible.)
You bailed on the very talented enigma that is Phil Kessel, whom you drafted very high with much aplomb, getting the number 2 overall pick in return, the aforementioned Seguin, only to give up on him after two seasons.  And what did you get in return there?  A bag of pucks.
Interrupting myself for a second but who was the previous very high draft pick the  Bruins gave up on before Kessel?  One Joe Thornton.  Definitely, definitely a trend, my friends.
Now you're giving up on Dougie Hamilton because why?  I'm guessing because they didn't think he was worth the money he was asking and the fact that the Bruins are up against it with the cap.  But all you got in return was the 14th pick...in my book that's trading down since Hamilton was a higher pick than that and you know what you've got with it.  I could care less about the other late picks in that deal.  Now they've traded Milan Lucic was a comparable pick and a player I don't know.
Is this a sign of a rebuild (and arguably an identity shift if you're getting rid of the one player who most plays, when he decides to, like the Bruins have always played) or does this have everything to do with money?
But more importantly is:  What faith should I have that you'll, A, draft great players with those picks (since you're trading great players for them) and even if you do, will you develop and keep them?