Now that Kyouka has Sayla's power, it is obvious that Erza needs a way to overcome this. As seen in the last chapter, Erza and Minerva are vulnerable to the Macro curse's control. Another reason why I personally believe Erza would need to overcome this ability is because Mirajane has the Macro ability herself i.e. currently Mirajane has an advantage over Erza and Minerva. In order for Erza to defeat Kyouka and keep up with Mirajane she needs to beat the Macro curse.
I really hope it's not a friendship power or a new armor. I would prefer if Erza can overcome this power strategically, probably using her current armors or exploiting a weakness she discovers in the Macro curse.
I really hope it's not a friendship power or a new armor. I would prefer if Erza can overcome this power strategically, probably using her current armors or exploiting a weakness she discovers in the Macro curse.