Ability to create a wireframe or template
It would be good to be able to create a template, wireframe or guides that I can toggle on and off, that appear on all pages so that I can make sure each of my pages are consistent in composition.

Have you tried the Grid Overlay option?
Grid Overlays are exactly what they sound like, a grid that overlays the website, to easily align, match and lay-out the elements of your website.
You can easily show and hide the grid using the keyboard shortcut, or look for it under the View option in the top menu.
Read more here:
http://knowledgebase.webydo.com/Design-Like-A-Pro-/52333672/How-To-Apply-the-Grid-System.htm