Doomfist's Rocket Punch is very loud so it's easily predictable and he's very underpowered, he needs a buff asap. Maybe make the ability completely silent or just remove the charge-up time, making it instant.
An instant punch would make him too strong if he punched with max damage. If it was reduced damage it would be a more balanced way of doing it. I think they just need to make it a tad bit quieter.