Update(4/19): So tracer was just hit with a nerf to her ult. The devs notes are as follows:
Developer Comments: Pulse Bomb was too good at killing tanks, who can be easy to stick due to their size. This damage reduction makes it less powerful as a tank-destroyer, while keeping it lethal against most other heroes.
I am actually ok with this. Tracer’s main priorities have always been killing squishy heroes and a 300dmg pulse bomb is still more than enough. What I’m concerned about is that this was never something that was being complained about and this will not make the anti-tracer part of the community happy. It is clear the devs are making an effort to nerf dive which would also nerf tracer and genji. The intro of Moira and especially Brigitte are prime examples. My concern is that I don’t think it will stop here. Brigitte is a good counter to dive, but when played perfectly dive is still superior, so I think an actual harder nerf to these heroes(tracer, genji and d.va) are coming. I hope I’m wrong, but that’s the impression I’m getting from the actions of the dev team these last couple of weeks.