Those so called assault rifles were banned purely on cosmetic reasons. They just looked so evil. They were banned based on what combination of cosmetic features (bayonet lug, flash suppressor, pistol grip, detachable magazine) because gun grabbers had no other rational way to identify the guns that they didn't like.
It is not only following the letter of the law but also the spirit of the law when Bushmaster elimintates the flash supressor and bayonet lug and has a legal firearm.
Let this stupid law die a natural death.
While I agree with your sentiment, I don't think it will be that easy. This will be a major issue in the campaigns for President and Congress, will probably show up as a question in the various debates, and will be used to smear Pubbies running for re-election. The 'Rats will trot out Klinton, victims of Columbines, Michael "Jabba" Moore", Rosie O'Strap-On, etc. The criminal, liberal mainstream media will demagogue the issue, and make anyone calling for the sunset of the AWB out to be right-win, paranoid, delusional militia nutcases.
IF the AWB dies, it will be because the ever-shrinking RKBA community kills it. Period. It won't go quietly, either...it will die a loud, kicking and screaming death, and could be resurrected easily, when and if another high profile shooting at a school or post office happens again. No...I'm not optimistic about this issue, or any other issue related to the RKBA.
Scouts Out! Cavalry Ho!