Last weekend, I sat down and wrote out what my sort of "ideal festival" would look like, if I got to set all the workshops, themes, and scheduling. The document ended up being split into two weekends (or, possibly one really long weekend) generally split into "Ritual Studies" and "Cosmology."
I admit, I'd like to talk the Grove into doing these sometime, and maybe inviting non-Grove folks to come to them as well, if they so desired.
I stuck the outline (and it's a very rough outline) on my website. I encourage you to take a look, and let me know what you think!