「You are correct. Anyone in this thread who thinks Mirage is strong or even decent is woefully mistaken. Mirage is by far the worst legend in the game, and has only been marginally improved since season 1.
Mirage's tactical is very niche and provides virtually zero useful intel to you or your team. It's ONLY advantage is the distraction it can provide once firefights have started and people are high on adrenaline and shooting anything that moves.
Mirage's ultimate is the worse in the game, even worse than Wraith's tactical ability. It's on a long cooldown, has a delay on activation and only lasts for ~6 seconds. In addition to this, your footsteps still make a lot of noise when invisible so players can continue to track you wherever you go, and sometimes even shoot you when you're invisible. Because of this his ultimate is pretty much useless in Platinum or above.
Mirage's passive (invisibility after being knocked) is okay but doesn't do anything to actually help you survive, win fights or help your team.
In addition:
Mirage is the only Assault character without a reliable escape.
He's the only character whose abilities provide no team utility whatsoever
Mirage is the worst character in the game and simply not viable in high-level play. His abilities need significant changes to make him viable.」
i think so too.
In rank matches, teammates leave when using Mirage.