>>531003336
>some characters need it to activate their core passives(nekomata)
>some characters don't want to be normal attacking because their normal string sucks and/or it's lower dps than continual quick assist looping(corin, anton)
Zhu Yuan also gets a free bullet every time she quick swaps onto the field so you never need to normal attack. It's also the crux of how she works in the astra+nicole comp without a stunner.
It's also just a fuck ton of iframes so if you don't know what the fuck is happening, swapping between astra and your dps can be a panic button.