@James,
I thought that ACF support members are more penetrative 🙂
Do you know the purpose of “default_page_template_title” filter?
It changes “Default Template” label to smth else. In my case to “Simple Page”.
Please compare these two screenshots:
http://www.awesomescreenshot.com/image/1024239/853b74f1812a2dfd6c1e7eb62d4e7f17
http://www.awesomescreenshot.com/image/1024240/3dc953d0c7321279a9cda4710003179d
