The next version of the MFG will contain a Treeview of the features you generate, with their properties. The features will be linked automatically when you drop them into the treeview. In this way, I hope to enable you to create a set of related features (ContentTypes based on Fields, ListInstances based on ListTemplates etcetera) with ease.
Since I have not been posting new updates, it seemed good to give you a preview what is to come soon. Other updates will be the support of ListInstances and the seperation of Logical elements from their features, which give a greater deal of control on how the feature.xml, elements.xml and schema.xml-files are generated.
For the current version of the MFG, see CodePlex.
Alfred