I agree with what you've said except.... 
If you look at the bust stats, you will notice a huge number from 1st round QBs. 
I can only see us taking one if Levy etc are happy to gamble(hell, Levy might just at that, he probably won't be GM for too many years). 
  
We'd be better off drafting QBs from  rounds 2-7, 1 ever second year till we find a.... 
Brady, Favre, Weinke, Brees, Hasselbeck, Brunell, Green 
or even a...... 
Bulger, Simms, Brooks, Griese, Plummer, Grbac