One issue with an ingame Mog Station would mean that SE will use it to advertise the cash shop items ingame. I have played some F2P/B2P games where the cash shop icon is big, flashy and whenever you log in or play for few hours, you will see ingame pop-up advertising the Mog Station.

I understand where you are comming from, OP. But I fear the marketing department will use your idea and twist to fit their needs. I feel that this is an pandora's box and I for one am not looking forward to ingame ads.