I've spent a bunch of time reviewing old logs (through the Lords of Hack main site, History Links).
I think that Dave Hanley was with us up to Slipstream (2010).
I actually really liked the Wilderlands of Hack campaign, despite the fact that it was short and we had real attendance issues. The adventures were a lot of fun and some neat stuff happened. Slipstream seemed a bit disjointed. It seemed we didn't have a lot of agency on our end about what happened.
Gatavia III was just awesome. The two things that were broken were the economy, it seemed an interesting feature, but ended up being more of a bug. The upkeep fees were just insane, and the domain stuff was more trouble than they were worth. Second, the summoning magic was just broken. Every problem could be solved by throwing a hydra or a horde of summoned berserkers at it. But, the characters were great, the adventures were varied and interesting.
Mutants and Muskets was also a lot of fun. It was filled with all kinds of crazy, and at the same time had a good sense of the feel of dangerous overland travel, plus crab people. Remember Cookie's 'Puma Steaks"?