Zeitgeist to me wasn't Zwan v.2. The band itself could be compared to Zwan, since it was Billy, Jimmy and two others. Now it's just Billy. But I don't think Zeitgeist sounded anything like Zwan.
I actually liked Zeitgeist. A lot of good songs came from it.
Pomp and Circ,
Trantuala ( awesome live ),
That's the way ( this just reminds me of the time-period. good song. kinda like stand inside your love ).,
Zeitgeist ( really good, simple song ),
The Rose March,
Peace + Love.
I mean, not typical Pumpkins, but I don't care what anyone says about Zeitgeist era, it still brought some decent tunes!