Greg responds...

1. Do you mean before we started or after? I knew Jeff Bennett and Jim Cummings from previous shows I'd worked on. I met Marina Sirtis, Michael Dorn, Bill Fagerbakke, Marabina Jaimes and many others at their auditions.
The rest I met for the first time at their first recording session. The two guys I've kept in (minimal) touch with since the show ended are Ed Asner and Keith David.
2. I don't know if it was her agent or her manager. I don't know what he told Laura. Heck, I don't even know if he was a he or a she. All I know is that her representation told Jamie Thomason that Laura would not be taking the credit. That may mean that if she was credited doing voice work on an animated series (which doesn't pay all that much, relatively) she might have trouble commanding a high fee for commercial voice over work. Or it might mean, that she'd be perceived as desperate for work, any work. I don't know. It doesn't matter. Laura's representation recommended against taking the credit. Right or wrong, we ultimately respected that decision.
3. For the most part we did group recordings, but there were always exceptions, because we had cast a very busy group of people.
4. We struggled through a few colds, but we never had any huge vocal setbacks. At worst, we'd reschedule an actor to record when he or she felt better.
5. I'm not sure what all these codewords are for. Was Rachel replaced in Goliath Chronicles? I saw those episodes and I don't remember that. I do remember that Elisa Pensler Gabrielli (who played Obsidiana) played Chavez in "Revelations", because it was only a few lines and Rachel's schedule just wouldn't allow her to record that week (or the week after or any time that allow us to make our schedule). I think Elisa did o.k., all things considered. We talked about ADR-ing Rachel later, but it didn't seem worth the expense.
6. Yeah, I'm sure they did. As you mentioned, the Archmage is a perfect example of this. Keith's reading of Morgan always made me want to explore a relationship between Morgan and Elisa. Clancy's reading of both Hakon and Wolf suggested the bond between those two characters. I'm confident there are other examples. We also tried (both intentionally, and I'm sure, subconsciously) to write to the strengths of our actors.
7. The triple goddess is a standard in most mythologies, and it's generally related to the moon. The Weird Sisters come from a tradition that includes the Graces, the Fates, the Norns, etc. It seemed natural to go for moon goddess type names. As far as I know, Shakespeare never named them.
8. Sure.
9. Uh huh.
10. Yeah. Way too often.