Well I would say take a look back and analyze the major problem.
First pray and ask the Lord to give you wisdom on what he wants you to do and how to do it. He'll lead you in the right direction and most likely a new way to look at it. Pray. Seek Him. Fast. Do whatever you need to do to seek the Lord and get it done.
Also, Step back and analyze it, Look at the bigger picture. One thing I'd ask is "How do I find the audience that's seeking my services I'm providing?" "Is your major audience fantasy writers?" "Or are you looking for people who are looking to improve their craft? Do you think you'd be able to find some if you stretch your reach beyond fantasy a bit.? I'm sure there are romance writers that would like to hone their craft too. See what the macro problem is rather than the micro problem. The micro problem "might be what can I do to fine this audience that fits my ideal audience" But the macro problem might be "How do I find an audience that are seeking my services? Who are they?"
As far as the audiences you've found maybe find a way to create the culture of improving craft that your focusing on. For example for the hobbyists, they might be content but there might be somethings they want to improve on. For example, if i'm a rper, I might be content in my skills, but I'd be inclined to read on how to give my OC depth. Maybe make it fun for them to learn. For the small-time professional see what you can do with helping turning out books that can help them improve their craft. Give articles about publications and interview editors and ask them what they look for when they are reading a novel inspection, what they expect, and What are the things that writers need to know before turning in a book for publication, like what editors WANT writers to improve on before they turn in a book for publication and what will more likely get them published. This will get their attention and really think about working on things. And create a culture where The more experienced small time professionals can support the less experience hobbyists and vice-versa. Cover all the bases of working on a book from spark of idea to publication and create levels. Create a culture where the writers support each other and encourage each other to keep one going. Where they can connect with each other and support each other, helping each other to push harder. See how you can Create the culture you're looking for and see how you can get that done.
Also, Look at other examples of websites who had similar goals to yours and see how they did it. Naniwrimo comes to mind as a good example to study. Look at their example, their structure, their culture, and see how they made that happen, and research about it. Learn their marketing structure, their mission statement, everything about them and see why they were successful in reaching the goals they achieved. By seeing how others did it it helps you to know several things. 1. That they did it successfully which means what your seeking can be done successfully in the real world, 2. It gives your business partner an Idea and assurance it can be done which adds to your case when your are looking for funding. 3. You can learn how they did so now you have a starting point for you're own structure. Look at several case studies not just one. Every site you know of that can be a successful case to you about that it can be done successfully realistically gives you Ideas on how it could be done helps you in learning how to do and just builds your case when your doing proposals to your business partner or others when seeking funds. Create a plan of how you plan to do all of this realistically then find case studies that prove your case.
I hope this helps. I'm taking production classes this semester so we're learning a lot about the preproduction phase of films which including getting funds, finding an audience, researching case studies of businesses and or productions that had similar goals to mines that have succeeded, and other things, so if you need anything let me know! hope you have a wonderful night! God bless! Jesus loves ya! God loves ya!