To start with, no body should bitch about player loyalty any longer when teams don't show loyalty to players that give everything.
As far as the trade goes, IMHO this comes down to if you think Kyrie is worth a Top 5 pick.
IT is most likely a 1 year rental, Crowder is a good player but the pick is probably the most important part because Lebron probably isn't coming back. Of course this trade could be a big bust for Cleveland if the Nets end up making the playoffs this year or close enough to blow the pick up. The East is so bad and teams like the Pacers, Bulls, Magic, and Hawks more than likely end up worse or because they are tanking.
As far as this season goes does this help the Cavs beat GSW? Definitely no IMHO.