Would organizing a DF succession game on meta be off-topic?
I don't quite know what a succession game is, but this sounds along the lines of any manner of scheduling for net-gaming matches or organizing collaborative play.
In which the answer is it is off-topic. Related: Oak's answer here.
The site Meta is the place to ask questions and house discussion about the site. When we get our own Third Place, then that will be an option for this kind of thing. For now, we can still leech off of chat.meta.stackoverflow.