Ezri was an annoying character that sidetracked DS9
No.

Ezri's a great character, and a better one than Jadzia at a base. It was great to see a Trill character who looked at the joining a different way, and to have a very different personality on DS9. It's too bad that, like Admiral Shran said, everyone seems to hate her with few exceptions.
Honorable mention goes to Broik. Quark's would've fallen apart without him.