it was, and then I realised that I was thinking of the Principal.
this is pretty embarrassing, but it does go to prove the point, the mayor wasn't even that memorable.
actually, outside of Angel and Spike, I think the Mayor was the *most* memorable season-long villain the series had. Not to shit on your opinion or anything, but I think season three is widely regarded among most fans of the series as being its strongest. To say that theonly stuff you remember from that season was the Mayor and Faith actually says a lot: for two "villains" to have enough of an affect on your viewing experience that you remember them so well is a great thing - on many other shows the villains are periphery, and their relationships nonexistent.
Season 4 imo was the most forgettable outside of season 1. The sci-fi elements were a neat addition, but I actually think as an arc it was one of the weakest - The Initiative was the sort of villainous entity you could only view as ominous if you really legit cared about... well, The Initiative. The Master, Spike/Dru, The Mayor, Glory, The Nerdnerd/Evil Willow, and The First all wanted to actively destroy the world and/or Buffy from jump. The Initiative was really just going around doing its thing and only became a legit threat because Buffy got a little too involved and Lindsay Crouse (God, I can't remember her character's name) got annoyed. And then her master plan was to create a really big, ugly super soldier. Granted, it took a lot of mystical voodoo for Buffy's crew to take out, but The Initiative, as a villain, didn't really have a plan or a direction or any clear motivation.
Not to mention that, as t3cii said, caring about The Initiative also meant caring about Riley or Buffy's relationship with him, which essentially NOBODY did.
Sidenote, if were to rank the seasons: 3, 2, 5, 7 (the first 10 episodes in particular were quite strong), 6, 4, 1
Also, I had no idea he was Quark until now. And the only Star Trek I watched was Voyager, anyway.