I have a directory full of half complete rules supplements. (In Eric's Take a Bow thread on the general board I mentioned an 18 year timespan between submitting an article to Dragon and self-publishing.) But seriously, yes, I do plan to do more rules supplements. They may or may not push the adventure back in the schedule depending on my inspiration and the playtest schedule for the module.
I have half of a superhero game written but the ship has sailed on that one. And, yes, it is class based.
I have a class toolkit idea that would be a set of class templates (like monster or feat templates) that would make it easy to convert a PrC with a limited set of spells into an existing class advancing PrC. It also has a different take on ECLs.
Then there's the file full of Feats. Everyone must have one of them. That could turn into a training book if it weren't for the dozen other books just like it.
I'll probably do another odd-ball magic school eventually: Abjuration or Illusion or maybe Divination.
My partner (he really exists) is working on his secret project at the moment. That will be far less crunchy than my book.
I also have a secret project. Kind of an organization book combined with a grab bag of topics. I don't know how to describe it. It's different.
