Nah she ain’t a damage boost bot. She’s good for now and I’d rather they not give her any sort of buff currently because the moment they do people will call for nerfs.
What she needs is QoL changes in visual clarity and output. Give Valk a circle around her beam target that shows the range where her beams will chain, add stats for kills, healing, and damage boosted during Valk, etc.
Umm DAE think Mercy is actually quite powerful when paired with pharah and superjump? You need to have a lot of skill to play mercy, look it up sweetheart.