Study an automatic way to create forms from models, aka Mito-admin
The application needs forms to create objects defined in DB models with Mito.
I am not against a manual or semi-manual construction, because the number of models will grow reasonably slowly during the application life, and because the user generally doesn't manipulate forms much. We will certainly find some abstractions to build the forms easily along the way.
The issue is: that could be the opportunity to build a Mito-admin plugin, à la Django-admin.