This is absolute great way to enforce some behaviour in a particular category (my painpoint was job posting, where everyone posted however they feel like 
)!
A bunch of features extra would be nice:
- the ability to „switch to no template” (optional). This would be nice to be limited by users, by level, by group etc; Some kind of „trust me bro, I know what I’m doing!”
- multiple fields on the same row (think first name + last name). A good enough fix would be to allow admins to set a class name for the form template;
- a repeater (i.e. group a bunch of fields and let users to add more of those);