I get the whole Iguodala/Thad shift thing... but even after, especially after that, we will become one of the worst shooting teams in the league. I think you can get away with 3 SFs in your starting lineup (Dala, Thad, and Smith) but I don't know know that you can do it with a PG who has as limited range as Miller.
I really do believe that a lineup of Hinrich/Dala/Thad/Marion/Dalembert is better than a team of Miller/Dala/Thad/Smith/Dalembert.