Does the maximum number of players increase with expansions?

[Mister Ed]

Yeah, the 6-player limit comes more from time considerations than deck size. With more than 6-players, it a.) takes an annoyingly long time for any one person's turn to come around, and b.) makes ANYBODY winning the game problematic and time-consuming, because once people get within striking distance of winning there are too many others all working to keep them from winning. It is far less likely, when facing 6 or 7 opponents, that NOBODY will have something to stop you from winning the combat than when you are facing only 2-4 opponents. I even find playing with 6 players to be kind of pushing it.