This idea has been merged into another idea. To comment or vote on this idea, please visit A-I-7914 Allow User Story Maps to Span more than one product.
It would be great if we could add user journey maps at the Product Line level. For example, we have an overall user journey that is like an umbrella for all products, then at the product level we break a particular segment of that journey into more detailed journey steps. It's not super critical but would be really helpful.