Wraith needs a buff and Pathfinder needs a nerf.

This will likely be a very unpopular idea, but... I think Wraith needs to have her size increased. Her tiny hitbox was a mistake, and no matter how much they nerf her abilities, that hitbox will remain an issue. Increase her size (both model and hitbox) by ~10-15%, or however much is needed to bring her up to Lifeline in size, and THEN they can look into buffing her abilities again.

Pathfinder needs a couple of seconds longer CD on his tactical. Maybe nerf its speed too, particularly at the start, so... Essentially slower acceleration. Means you'll be vulnerable to fire for a brief moment right after grappling something, before you can get up to speed. This slightly nerfs its use to instantly dodge fire, while still remaining as the by far the best repositioning ability in the game.

The core issue with each character, in my personal opinion, is that Wraith has too good of a hitbox, and Pathfinder has too good instant mobility in combat, too often. There's a reason why in any given game, half of all players are Pathfinders and Wraiths, and if there was no limit of only one per squad, you could bet the pickrate would be even higher!

My source on pickrates

Scroll down to "Legends Comparison", the second section, and select all legends. You can immediately tell that Wraith and Path are just leagues above everyone else in popularity.

Keep in mind that those numbers are based per player, not per squad, meaning that the highest possible pickrate is 33.3%, which means every single squad has that legend. Which means...

Wraith (~27-29% pick) is in ~80-87% of all squads

Pathfinder (~21-24% pick) is in ~63-72% of all squads

Also means that their combined pickrate is ~50%, meaning that out of the 60 players in a match, roughly 30 will be Pathfinder or Wraith.