I could write 10,000 words on Griffin, but I will sum them up like this:
The Clippers could not afford to let him walk. He is still one of the best passing big men in the game, and is also historically very, very good in that department. His first step is good, hes physical, his jumper continues to improve each year, he is 6'10" and can be the fulcrum of an offense, can create off the dribble, ect.
That said, his athleticism is declining quite a bit, he cant stay healthy, and that contact is going to be an albatross the last two years. I like Blake, I think hes still a really good offensive player, but I told anyone who would listen last summer there was no way West was keeping him around on that deal. The Suns can do better by building organically. Perhaps they never develop a Griffin-like talent, but they also wont have to pay someone that much money who is a declining athlete, a trait which is a big part of his game.