Gibby nerf, wraith nerf, mirage and octane buff!!
It's definitely clear that gibby is amazing right now. he basically has lifeline's passive on a cooldown, and that in combination with fortify and gunshield just makes for a stupid op hero. He's very clearly overbuffed.
It's the same for wraith, she's been stupid good for so long, and it hasn't changed. Her portal is too good to not pick her over a hero like mirage or octane.
Octane is so underpowered, it feels like every other legend just does his job,, but better. His ultimate is outweighed by pathfinders, and stim is only beneficial in very niche situations.
Mirage is just bad by default, his clones aren't fooling anyone, and his ult is easy to read.
I'm sure the developers have received a lot of ideas on how to fix this issue and hopefully they're working on it right now, but I have faith enough in the team of professionals to come up with something to good instead of players that don't have an ounce of game development experience. Hopefully a patch gets pushed soon to let all the legends become playable in a competitive setting.