You make a good point. I think it would be wise to offer some instruction for people who are looking to hardcode their ad tags. For the most part, though, we cater to small to mid tail pubs who are generally going to be interested in the less technical solutions.
When we do deal with larger publishers / networks. They are often very tech savvy or have ad operations teams that are fully equipped to hardcode the tags without our assistance.
I am going to begin working on a guide for the more technically savvy pubs. I feel that we can offer better support in that area. In addition, we will definitely keep listening to publishers to see if there is demand for a more in depth guide for publishers using alternative methods to install their tags.
Thank you for your input! Let me know if you have questions!