Wow, I would love to, but my freelance video gig hasn't been successful enough for me to swing ~$1000 on the housing. I know it would be a huge boon to my setup, but unfortunately my experimentation with the 5N has been driven by the price/performance ratio.
You did mention in the preliminary guide that you're looking into an external audio input for the accessory port, which I would also be greatly interested in. I think your work holds a lot of promise so I'll be following Compact Cine Systems closely. Wish I could be a venture capitalist and fund the projects, but as a cash-poor but ambition-rich filmmaker, I'll have to be a well-wisher that can support when I can.
All the best.