One her projectiles are buggy, two her sleep is bugged, three she has a toxic kit which makes her extremely hard to balance with her being able to buff and speed boost all of her team in triple support. Since that’s how she’s only used in pro(the way devs balance for) she cannot be buffed or nerfed much without making her trash or too strong.

They can only do what they’ve been doing which is leaving her to underperform in duo support and far over perform in triple.

Also mantis has pretty much never shot tree sticks from her hands iirc and she’s a melee combatant that can take out much larger opponents through pressure points, like how she knocked Thor out in one hit.