It is absolutely crucial to get Lopez established in the post. It gives us a much needed option to work through throughout the game, shifts defensive focus there, absolutely changes the dynamic of the game. With Bosh primarily bodying him up, there is no excuse that this didn't happen. It is partially Avery's fault for the sets he was calling, and partially Brook's fault for not pushing around somebody he's easily got 30+ pounds on and setting the tone early. I thought that was a big reason we couldn't keep pace with the Heat once our shots stopped falling.
That said, moving forward, getting our SF's back is going to make a big difference. I think lost in these last two abysmal losses (each in their own way) is the fact we've been playing without a small forward. The things that Wallace and to a lesser extent Childress do on the court were definitely missed big time these last two games. Hopefully once they both get back healthy, we're not placed in another situation where we're without both at the same time again; or at least by that time maybe Toko will have established himself.
Moral of the story, give it a little time, let the kinks work themselves out a bit, and we can realistically start talking about the strengths, weaknesses, and potential of this team beginning around 2013 or so.