don't think this is a bad move at all. drafting darko at 2 (leaving melo etc on the board) was a bad move. but 4 years $20m for a young shot blocking center who plays D is not stupid.
all they need darko to do is protect the basket and grab a few boards. that's what were asking perk to do for quite a bit more money.
plus, once he got to sota and got some real minutes playing next to love and jeff his numbers improved significantly. I'll bet if he starts he'll average somewhere around 9 points, 8 rebounds and 1.5 blocks. perk like numbers at a discount price.