I'd love to get a game going again - maybe two. I think it works best with fewer players, so everyone has lots to do and lots of opportunity to contribute. What would you think about Rachel, Charissa and Dave (or maybe Nick if he's interested) for one group, Mathew, Nathan and Dave for the other? Or just drop the attempts at consistency of the party, and just pick up and play with whoever is available and interested?
It helps me a lot, though, to know who's going to be involved when I'm preparing for a game - otherwise it's hard to balance if it's too easy or too hard. It also complicates things when characters disappear from the middle of an adventure, especially if they are carrying valuable items. Any ideas?