I warmed up to Ezri later on. I don't think either Sisko or Worf's reaction was unrealistic, but maybe each a little exaggerated. I can see Worf feeling that way on the inside but treating her like garbage was over the line.
I liked Zek at the beginning but toward the end he became a little too silly to justify holding a position of power.
I would have liked it if the Rules of Acquisition read more like a libertarian economics textbook. Instead the rules tend to be like:
1-200) Be a dick all the time
201-285) Women suck
Vic Fontaine has to be my least favorite. Plots like that belong in Voyager, not DS9.