So Blake and Amare played the 3 because.. Oh wait they didn't... Ever..
If you have any pivot game they will try you at 4 first.. Ask guys like Beas or Lewis..
Blake and Amare aren't quick enough to guard the perimeter. They would get massacred by 3's and completely destroyed by 2's and 1's on switches. And neither guy has the ball handling skills for the 3. But if there was even a chance that Griffin had the skills to play the 3 the clippers would have tried to play him at the 3. The casual fan loves seeing big, powerful perimeter players that can power their way to the basket and finish with an athletic layup or dunk. That's the fuel that sports media runs on right now.
Its the reason why guys like Perry Jones and Drummond come into the league with shit big man skills and talk about being KG or Durant. In HS now when coaches see that you are athletic enough to dribble around on the perimeter they encourage it. And these big guys see who the media pushes so they all want to play around on the perimeter.