+MAGELLAN will quit his job as a chief warden and will transfer to the marines to gain back his lost honor(he will promised to himself that he will arrest/kill every escapee from impel down)..
during the two years time he will proved his worth to the marines and will be promoted from 1 position to the next until considered 1 of the guys to replace the vacant seat of an admiral, the fleet admiral(probably Aokiji) will vote for him..
+Smoker should be a vice admiral during the 2 years span..
+eventually Coby will be an admiral too, but enough of that it's too early for him. it will probably happen at the end of the story anyways