I'm about halfway into season 3 and not digging it as much as the first two. The standalone episodes seem especially silly in this season (zombie cops? Angel switching bodies with a horny old man? A guy who turns people into sexist woman beaters by touching them?). This is some pretty lame stuff. They sometimes lead to occasional fun moments (i.e. Possessed Angel making out with Lilah, then freaking her out by inadvertently biting her, which she thinks is just him playing mind games

), but mostly feel like a waste of time.
I feel like the arcs haven't been as consistent this season either. I didn't really like what the show did with Darla after her 'comeback' with Druscilla. The two of them were fascinating together, but once she got pregnant, I started to find her boring. In the episode where all of the sympathy was supposed to be for her, I felt more bad for Lorne having his place blown up twice.
Fortunately, Darla's talk with Angel on the rooftop and her conversation with him in the alley at the end of
"Lullaby" were some of the best stuff she's ever done, and redeemed her pregnancy arc. I just wasn't very into it until that climax. I am curious to see where things go with Angel, the baby, and Holtz, but much of the set up for that situation was a chore to sit through.
I'm also not very engaged by Cordelia's struggles with her visions. I don't really understand why she insists on keeping her visions. I know it's supposed to make us find her heroic, but I think she should have just accepted Groo's offer to take them from her through intercourse. It reminds me of Angel's choice in
"I Will Remember You". A character has an opportunity to have a much happier life (in many ways, the life they've always wanted) and instead they insist on suffering, in order maintain this self-sacrificing tragic hero status. I know Angel explained why he didn't want to become human again, but part of me wishes he'd just stayed the way he was and left the work to Buffy. It felt sort of like an excuse just so he could still have his own show.
I feel like the show is really trying to force Cordelia into a hero role - another example is her starting to train with Angel so she can fight. Angel seemingly having a crush on her strikes me as belabored too, again, despite the show's many obvious attempts to try to make it feel natural. I can buy Wesley's evolution into a tougher, stronger, more mature character, but I still find Cordelia's unconvincing. She's certainly become much more sympathetic with all the pain she's been put through, but I have trouble not finding her heroism far-fetched.
Maybe I'll just never be able to because she was so far from being a hero in the first place. Wesley always had potential to be a hero, he just used to be more clumsy and out-of-touch. Cordelia started off as a selfish, vain, valley girl stereotype and it feels more like circumstances have forced her to be more humble and less selfish, instead of like she's reached potential she always had, like Wesley.
Another thing I'm getting frustrated with is the constant use of irony in the show. How many episodes start with someone saying something that leads you to believe they're talking to a certain person/dealing with a certain situation, only for the camera to cut back to reveal that they're talking to someone/doing something you couldn't have predicted? It was cute at first, but it's starting to become really tired and stale.
On a more positive note, I'm enjoying the character of Fred a lot. My more objective, cynical side keeps reminding me that she's a rather unoriginal and somewhat cliche character - impossibly cute and sweet innocent-looking mousy/nerdy/brainy girl who is always making big puppy eyes and speaking in an adorably nervous motor-mouthed manner. She's very much in the mold of Ezri Dax, and Whedon's own Willow and Kaylee.
I know all that, but I'm charmed by her anyways. I guess I'm just a sucker for that kind of character.

. I think another reason I like her so much is because Amy Acker plays the role so well. I always get a kick out of Fred's cute, awkward lines, although the joke of her using too many words can be irritating at times.
My favourite episode of the season so far is
"Fredless". My only nitpick with that episode is I didn't like the misdirection with Fred's parents. We kept being lead to believe they were evil (including a bit where her father says,
"Not yet" to her mother - a line that never pays off) and this ends up being another one of those 'screw with audience expectations' cons. Other than that, however, I thought
"Fredless" was just about perfect. I hope the rest of the season has more episodes like that, and fewer episodes with wacky monsters and/or forced Cordelia heroism.