"what do you deem OP about her?"
I'm not trying to answer for anyone else, but here's my take: I can handle a character with absurd speed. One character. Now add in her two squadmates. That's three. Now add in however many squads are attracted to the sound of your gunfire, most of them using her nitro gates. That's a hot dozen. And the ones who aren't using her nitro gates? They're using their own because every single squad on the field has an Axle right now. That's too many gates to count, all ready to go again after eighteen seconds. The field of battle is becoming a fly swatting contest. It isn't as bad as Wildcard, but it's close.
After she gets nerfed, after her 30% pick rate drops way down... sure, she'll be fine. Right now she's a nightmare.