It would be very beneficial to have an edit footer option in the design manager templates. Right now when you add JS to the bottom of the template (either in a custom HTML or HubL Module) it adds the content above the both the following JS lines.
This makes it hard for us to customize things like the Gallery slider. In order to add customizations (from Slick Slider) we have to do it from the "Edit footer" area in the page settings (as this code get placed below the JS files above).