My ad firm has been frustrated with the same thing. We want to create one template with multiple rows that would account for lots of different layouts. Use that as a master template, then in the email builder delete and/or duplicate rows (modules), and re-order them up and down the email as needed. The workflow currently exists in the landing page builder, but not for emails. Customer service has told us there is no way to do this currently? If we have to clone, then edit a template for every single new email that gets created across dozens of clients, it’s not a “template,” and we’ll have to continue directing our clients to use a different company until this feature is added.