SleepIsOverrated - I think whiny!dawn is partly because Michelle T was actually a teenager, whereas the others, in fine US teen drama tradition, were in their 20s. It would have been weird for a 26 yr old man to be that childish!
Buffy's finances: I'm sure Giles helps out with her, and Willow's rehabilitation - doesn't he give Buffy a big cheque in S6/7?
re:accents - I always find it ironic that out of the 4 vampires, Spike, Dru & Angel/us were all born in the 18th/19th c's so could conceivably have been American, yet all 3 had terrible British/Irish accents. Yet Darla was the only one old enough to have had to actually been born & lived in Britain but was the only one had an American accent???
And how come Spike & Dru kept their accents but Angel dropped his halfway through the 20th c? Did the gypsies curse his accent too?
More pressing issues: A town of app 30,000 with a huge death rate has an amazing amount of facilities, a college, multiple high schools, an ice rink, several clubs, huge mall, museum, docks, AN AIRPORT, a ZOO.....
What annoyed me was after S4 Willow was just gay. Never any mention of bisexuality or sexual fluidity - despite the fact she had a fairly serious relationship with Oz, crushed heavily on Xander for years, and even talked about having a crush on Giles when she was a teen. I'm all for her being gay and liked Tara - but I don't like the way they completely erased part of her character like that and never referred to it again.