I've just created a possibility to create brand new ItemPage from scratch. My work is avaliable here: https://github.com/magul/pywikibot-core/tree/newItemPage

it works like: i = ItemPage.createNew(repo)

Before it (afaik) there was not possibility to simply create new ItemPage (you were able to create new object of ItemPage class, but should provide a title, and create new ItemPage from existing page on another site).

What do You think about it?