It doesnt need any "drawbacks" because its pros or "exotic" features arent as good as say..every other exotic. Its PERFECTLY balanced and fine where its at. "It adds agility" ..yeah so do certain rare weapons lol. Leave this gun alone. Its beastly in the right hands and good all around. You want to talk TWEAKS look at the last word..look at doctrine..look at a gun in dire need of TWEAKS and maybe people wont give you so much shit.