It didn't look like there was a lot for a season finale to do. There was, in the end, but it's nice to have a finale with room to breathe and not needing to move at too fast a pace.
The main point here, of course, is that Warlow is an entitled and abusive man and always was if you were paying attention; his superficial charm is textbook abuser. So he needs to get his comeuppance. It's also interesting to see the contrast offered between the essentially BDSM relationship between Violet and Jason: she "owns" him, and makes him pleasure her daily while denying him release, but it's consensual. Ish. Warlow is just an abusive twat.
Also, we hear the welcome tones of the Breeders' "Cannonball", Bill is back to normal and, ironically, Adilyn is needed to transport everyone to faerie and defeat Warlow. There is much fighting and, at a fairly early point, the goodies win, Warlow is killed and the episode can now do other stuff.
There is a fascinating arrangement proposed for Bon Temps, proposed by Sam, to "pair" each resident with a vampire for protection in return for feeding. It's moving to see Jessica offering to protect Adilyn for nothing. It's also moving to see Tara's no good mother offering to feed her.
We end a surprisingly reflective episode, in a season that started rather rubbishy but ended up ok overall, with Sookie and Bill still estranged and, naturally, marauding vampires...