See you saw this as a weakness, but I see it as a strength. One thing I go for (and its honestly inspired by our own Celtics) is versatility in my 3,4,5 positions. Amar'e last year was named 2nd team All-NBA...as a center. My first (starting) lineup is big, and gets its identity from solid halfcourt sets, efficient scoring, and one of the best defensive anchors in the NBA.
My second team is fast, loose, and athletic, and gets its identity from its offensive matchups at the 4 (Williams) and the 5 (Amar'e), where my guys will be able to get up and down the court faster and stretch the defense with their shooting, opening it up for my penetrating pg and my yet unnamed but sure to be awesome perimeter players.
I don't think you have to be one or the other, I think you can be either and both, depending on which lineup is most advantageous.
I love this and was hoping that would be the direction you would go with this team. I think you absolutely need to bring Williams off the bench to do this though. Think logistics if Williams is starting... to go small, you need Bogut to sub out of the game. So, when does he first sub out? Say, with 4 min left in the 1st quarter. OK, now you can go small... for 4 minutes? Wait, are Amare and Williams playing the entire 1st quarter without taking a breather then? That's going to be some tired guys playing in your "dynamic" lineup. Then are they both sitting on the bench together to start the second quarter? I just don't like where this is going.
I think you're jumping the gun a little bit here and making it a little too black and white. I've always seen a good substitution plan as a fluid thing, and less like a blueprint, and once I have my rotation filled out I'll be able to really show you how it'll work. I have a pretty good gameplan in my head of how I want this to play out, but I don't want to get too into it until at least the end of the 7th (afterwhile I will have shored up my 7-man rotation). Until then, I don't want to let any names or concept drop.
Now you are big to start the game and don't have to worry about Williams getting torched by the Lebrons, Melos, and Rudy Gays of the NBA.
I think at once worries about DW's (henceforth in my mind to be referred to as 'Darkwing Duck') defense are both justified but a little bit hyperbolic. He doesn't have the 'freakish' athleticism that LeBron has, but he's generally assumed to have enough to make due against most of the NBA's small forwards.
Also, he'll have a pretty significant strength advantage over just about anyone including LeBron at the 3.
So my question is..how are the Rudy Gays and Melos going to stop Darkwing from torching them? He's 6'9+ in shoes, he tested out as the strongest player drafted in the first round. He was the most efficient scorer in the draft, and the most versatile. He doesn't have any attitude problems, and has responded remarkably well when challenged by coaches. He's shown a remarkable ability to adjust his game, and he completely changed his body between his freshman and sophomore years at AZ, and he still has 10% bodyfat left, so he's still got a lot of room to improve when exposed to the NBA's rigorous training regimen.
You're saying I should fear that the league's starting SF's are going to expose him, but I'm saying they ought to be just as scared of being exposed.