People have gone down this road of selling niche tools many times in the past in film making. There are a lot of pitfalls.
For starters not many people need story boarding.
When someone is actually doing a project that is big enough to need story boarding, they are going to have some infrastructure and making a wrapper around prompting image generation is not going to be far fetched.
The narrow window of productions that are doing story boarding but think they need a tool to wrap image generation and have no one to script some tools themselves is pretty small.
For starters not many people need story boarding.
When someone is actually doing a project that is big enough to need story boarding, they are going to have some infrastructure and making a wrapper around prompting image generation is not going to be far fetched.
The narrow window of productions that are doing story boarding but think they need a tool to wrap image generation and have no one to script some tools themselves is pretty small.