Allow different types of Master Features

We use Master Features a few different ways:

• A group of related features 
• A use case that requires work (features) from different products. 
• A feature that will be implemented in different products at different times (each of those would be a feature)
• Descriptive text that describes the context of the features it contains

We need a way to differentiate these types of master features. We need to be able to specify different types of master features, and for each type, we want:

• A unique workflow (statuses)
• Unique custom fields/layouts