I have never even considered responding to a request like this, though I am certain I have seen such requests on plenty of open source software forums for software that I use and enjoy. But the quality of your software and the strength of writing in your appeal are too compelling to ignore.
I would love to throw my hat in the ring to help out the project in any way that I can. My real strengths are in copywriting, and I’d love to help you write your Tutorials, Wiki, whatever. As someone who lives outside the development of the project, I think I might have a unique, non-technical perspective that might appeal to end users, which is not to say that your documentation isn’t excellent, but I think sometimes it might help to be learning how something works from the outside and then teaching it to someone else. I’m also familiar with using wordpress and feel I could learn any other CMS quickly.
Recently, I decided I needed to learn more about web development so I could do more for my ecommerce (WooCommerce/Wordpress) site. I took several classes at a local community college and kept waiting for them to be interesting/usable. It occurs to me now that I could probably learn more working with you on something like this, and trying to be helpful where I can, than those classes will ever teach me. So I’d love to help out where I can, if you don’t think I’d slow you down.