I know it was confirmed a while ago that it's not going to happen. However, PSO2es would boost up sales of AC by a lot. Concurrently, there is a plethora of issues of gaining AC directly from Microsoft Store, even for those living in North America.
Localizing PSO2es with AC payment through mobile would be healthy for the NA servers. It'd also be a motivation to further play PSO2 for those that likes to affix or sell gear exclusively from PSO2es. Yes, I know we have some ES-only items implemented, but it's only a suggestion.