As for the legends, I think Wraith is ridiculously overrated. Her Q makes her extremely vulnerable. She can't see you, she can't draw her gun immediately after exiting, she can't open doors, she's really visible, etc., etc. It's only useful against bad players and in very niche scenarios where you have instant cover and the enemies are far. Like the video I posted last page has more than a few Wraiths using it to absolutely no avail. Her passive is one of the best passives, but in a game like Apex it's just a nice to have, not awesome or anything. Her ult is a double-edged sword at best. Sometimes it can be nice, but as an ultimate it's pretty fucking meh.
Bangalore's just OP, her passive needs a nerf. Her passive is a ten times better Wraith Q and she has it up constantly. The smokes are also too good because once you get Digital Threat, you can just free kill anyone who doesn't have one. Sadly, her voice lines are so fucking cringey and annoying it's hard to play her.
Pathfinder's cool but pretty much the only legend who has no abilities that help in a direct gunfight. Grapple can be useful before or after, but hardly ever during, since you're very vulnerable while in the air. His passive is the worst passive in the game. Knowing where the next circle is does absolutely fucking nothing in this game.
Bloodhound's ult is pretty damn good in theory but in practice I don't like it because enemies glow red and the HCOG's red dot just fuses right into them, making it harder to aim. He also has no mobility/escapes outside of his ult. He's also loud as fuck in his ult.
Mirage is probably my favorite. Another nigh useless passive (except maybe if you have self-revive), but his active is the best active in the game IMO. You can have a decoy up 24/7 to scout for you, and you get a notification about where the enemy shot it from. The uses for decoys are so many, and you can use it while healing. Also a very good counter against Peacekeeper campers in houses. If you know you're against a good player, you can even do some Dota 2 style jukes where you pretend you're a decoy to escape. His ultimate is also one of the better combat ultimates. That's mainly because the competition isn't very stiff, but still. The circle of decoys is basically useless except as visual obstruction, but the movement speed and cloak can be really good. Not as a last minute escape, but for flanking and engaging. Sometimes it can be annoying, though, because you can't end it when you want to. So if you get spotted (by, say, a Bloodhound in ulti) it can fuck you over hard. Doesn't last for that long though and you can usually juke until it ends. But again, there's never a fight where the decoy doesn't help in some way, which is extremely good. Every other legend's active abilities are very situational.