Early on last year it was said that Arokai will be "Seamless" and that there won't be any sort of map maker, so I highly doubt (even today, I still do) that there will ever be "private maps", because there's a high chance that there won't even be a 'map making' option.
As for the creator, it's a load of fun making markings. I'm literally addicted to making them now, especially since I just made Amaterasu markings for giggles. Seriously, I don't giggle hardly at all anymore. I laugh when I'm amused, or I smile. I don't giggle.
BUT I DID.
Ineedtogetawayfromit.