After the Dark Domain Part 2 update, part of the new rewards for beating Dormammu is Ultron shards. But for those like me who've beaten him with 9 heroes before the update, we don't get compensated with the new rewards. It's unfair that newer squads can get 5* Ultron for free while those like me who've played since launch and have beaten Dormammu 9x don't get anything for our efforts.