It hit me that it's been almost a year since the last time I've played Illeria. I really need to fix that. I need to find more wargamer friends in the area.
I had an idea a few days ago, that I'm not sure what I think about. The game has always been played on two boards. The thought hit me, what if you played on one board, but that spirits could only affect other spirits and vessels could only affect other vessels? This could have a few possible advantages. First, before you had to split the table, which always made the surface really narrow. Here you could fix that. Also, now you could have some kind of idea of how "close" a vessel was to her specter (and as such, you could have abilities that would only work if they were close enough together). The downside is that it might get really confusing. Also, it would mean that you were fighting on the exact same terrain in both worlds. I'm not sure if I do or don't like that. It would take a little flavor away from the spirit realm (where there is a lot of bizarre terrain), but might add some connectivity.
Perhaps I'll ask my next playtester about this.