I personally think she's overpowered on her ultimate but overall with her main firing weapon, flight ability, and grenades she's great. They just need to nerf her.
Dude just imagine having a D.va and echo on your team. The Enemy has a D.va so echo changes into her and then you have 2 D.va bombs on your team oml!
but then there's enemy Hanzo and a Hanzo on your team in which you turn into the enemy Hanzo. Two Dragon Arrows
Echo is pretty op! When you like turn into genji a few hits and you get a gengo ult so It overpowered
new hero is always op lol. they gonna nerf it soon
kind of like they did to sigma