I didn't like the really bland Federation anthem in "Take Me Out to the Holosuite", and generally I don't like the TNG+ Vulcan haircuts (same as I hate the TNG-era Romulan foreheads). Why could they not find the same hairdressers that did such a good job on the Vulcans and Romulans in TOS and the films?
I like Vic, but agree he got a little overused at points. Agree about the malfunctioning holosuite stories. But I like Exri. I like her arc, I like how she didn't want to be joined and was learning to deal with it. I like how the joining changed her and she found a new track that neither Ezri on her own nor Jadzia Dax had been following. I like how she found closure with those elements of her prior life -- some differences, some things the same... I also like where her story goes in the Relaunch novels following the series finale.
The whole O'Brien thing is probably one of my biggest gear-grinders. *sigh* He was an officer up until Ron Moore couldn't tell the difference between rank and position. We definitely needed enlisted insignia in TNG and DS9, so getting that was a good thing -- but it shouldn't have been O'Brien. *grump*
--Jonah