Droprep won't help you at all. Go to that Interspace station (Roponogi or something is the name) next to New Tokyo planet and take GC or Blood Dragon bribe, those will drop your Corsair/Hogosha/Farmers reputations and bring your GC/Dragon/Outcast reputations up (GC bribe is best for this cause they are close allies with both groups). Just dont take too much of them or Kusari lawfulls will become hostile to you. One, maybe two bribes will fix your rep just fine.