I hope to one day study classical Japanese, preferably after I'm somewhat comfortable in Modern Japanese.
The only online course I know of that teaches classical Japanese is Imabi: https://www.imabi.net/introtoclassical.htm
While I would, of course, be interested in a full-length course on Classical Japanese, I'm also aware that this isn't a focus of the platform and wouldn't even be considered until Phase 4 has been released, but I thought it was important to express my interest in learning it.
That isn't to say that there probably couldn't be an opportunity for an extra credit lesson on the history of Japanese that covers Hentaigana, or examines classical works like The Tale of Genji, or something of the sort.