Are maps essential? Hmm ... Maps always help readers to see a place better. In fact, my next endeavor is to illustrate the islands and fiefs of the Albean Empire. If you could tell me where Araneus is located in the Empire, I will locate it appropriately. We don't need every detail of an island. A representation is sufficient. If you need help with mapmaking, I will be available to help. You just need to provide a simple drawing, or you could leave it up to me to locate your fief's islands and main settlements. Either way, it is up to you.
I think we shall treat every geographical proposition on case by case basis. The only concern is to maintain a balance of power in the world so that fairness could be kept for every contributor. Otherwise, we are always in need of original and creative ideas!