I love th episode 'Chosen' but here are 4 things I think would've made it even better.

1. An explanation for the fact that the turok-han were so much weaker. In their first appearance one nearly beat Buffy to death, but then Xander and Dawn can take them on? I've heard fan explanations, some saying Buffy just wasn't prepared and was emotionally fragile at first, but she's a slayer, that wouldn't take her to Xander's physical level. Some saying Spike's amulet thing weakened them, or that the First made the original one stronger like he did with Caleb (I tend to lean towards that) But a second of the show to explain would be better than fan speculation.

2. A resolution to what happened in 'Empty places'. Personally I wish this episode had happened earlier in the season so I wasn't still annoyed with the scoobies in the finale, it really took the shine off what would've been some good moments, but I understand they wanted it nearer to the end so the tension had time to build and make it more excusable. But all it would've took to get me back on the character's sides would be an apology. An acknowledgement that during an apocalypse they kicked Buffy onto the dangerous streets, and that it was wrong. Or even less than that, for one of the characters to worry about Buffy while she was gone (and for all they knew had been attacked/killed by Caleb). If they couldn't have them say 'I'm sorry' then at least 'I hope she's ok'

3. This isn't a problem with the show, it's just a personal preference I wish Kennedy had died in Anya's place. It's not just Kennedy-hate I genuinely think it's a better plot. Part of a good finale for me is the feeling that the characters are moving on to an interesting chapter of their lives. Especially since Buffy was becoming a comic. It's Joss, so a character was going to lose their loved one, but Anya/Xander leads to a more interesting place. The development of their relationship, deciding if they're lovers or friends, their jealousy, it's just more interesting.

I think if it had been Kennedy instead of Anya I'd have been far more likely to give the comics a chance, I'd have been curios what was going on with Anya and Xander and to see how Willow coped with losing another loved one.

4. Someone other than Dawn having the final line. Again just personal preference, but I wish one of the original sccobies had the last line. Dawn did grow on me, but I don't think she's a good enough character to have the final line, I really think it should have been one of the original scoobies.