I have an idea or suggestion if you can accept it to be added in AMR for future update. How if there is a feature to enable AMR can display all the sites that match with the categories we type in the field? For example, if we want to submit the finance related articles then there is a category field provided a field in AMR where we can type it like "finance,investing,loans,credit" etc. and then AMR will display all the sites that match with all those categories which the appeared sites include the AMR default sites and the scraped sites then we can submit the articles to. So with this feature we are not necessary to search for and type the categories in the article category section manually again.
My idea is appeared in my head after I remember the category feature in another article submitter called Article Demon which I had ever used it just few times ago. So I think if AMR can do that it will might be great and the submission will be more accurate and match to the sites.