Hi Joao,
I know, but we are working on a site with a fast growing number of pages. For that matter we all create our pages from templates (.csl pages) If the client wants a change in the near future it is important for us that we can make the change once and it will be implemented on all pages (30, 50). Like our previous site made with .dwt dreamweaver templates.
In your new status report of july 28 your team speaks of:
Template Manager
The revamped template manager will be coming right after V2 Elements, and as a quick reminder this will be a new way to create, save, and export your headers, content, footer, and preset templates in Pro (for all builders) and your content and preset templates in X (for Cornerstone). We’ll explain more about this later, but we are looking very forward to this feature being completed as it will complete our initial vision for Pro. After V2 Elements and the Template Manager, I’ll begin to share some of our other development plans for X and Pro.
Is this “template update” option on your team’s task list for 2017 or not? It would be a great feature for sites with a lot of pages. Our client asks for it 
Friendly regards, Marathon