Harry’s lobbying against some of the harsher punishments was disappointingly and shockingly fruitless. He was told to be grateful that his testimony before the Wizengamot had spared Draco and Narcissa the Kiss. And the overall impression was that yes, everyone was eternally grateful to Harry and his friends for leading the charge during the war and killing Voldemort, but the crafting of bureaucracy and the meting out of post-war penalties was decidedly not within the scope of an eighteen year old Hogwarts drop out.