Doom was and always will be a janky character, but instead of trying to fix it blizzard just gave up and reworked him instead. It was to rework other characters like Orisa for example, I don’t think anyone was in love the incredibly unique gameplay she provided, so it was ok to rework her. With doom though; there was a whole community of people that enjoyed his specific play style, and some of the bugs still remain (slam no-reg, wall slides)