The way I see it, Lara will live. According to Thomas, she's been working to consolidate and increase her power, and I think the consequences of that will take several books to play out. I don't believe she'll die until she ascends to the throne of the White Court.
Which means Papa Raith's days are numbered...
Thomas I think will be involved in intrigues against his sister when she rules the Court, so I believe he'll live, but a major injury is not off the table.
I have a feeling Carlos is more likely to survive than Luccio, as he has ties to both Harry and Molly. So he's a bit more likely to be needed in future books than Anastasia. (Poor Anastasia. I think she's toast.)
I'd like to see at least one Senior Council member fall in battle... and it sounds likely. Rashid is needed to fight the Outsiders, and I suspect Eb will die closer to the BAT. The Merlin's death would destabilize the WC too much at this point in the series. Anyone else is fair game, though in terms of emotional impact, we've spent the most time with Listens To Wind, so he's in danger. Ancient Mai would be next in line... though hopefully not before she explains why she's so impressed with Mouse the Foo Dog.
Mouse is probably off looking after Maggie, so both of them should be away from the action, and safe. And Mister is at Karrin's house, so he's good too. With her injuries, Murphy will probably still be on the sidelines, so she's relatively safe... but one of her family members won't be. (That's the funeral Jim teased us with.)
With so many major players involved, the Alphas seem pretty outclassed, so I'm not seeing them having a big role in this book. (Would the White Council approve of their shapeshifting abilities? They're better off laying low for the moment.)
I expect Toot-Toot will make an appearance, but survive. He's too useful to be written out, not before
he grows in power enough to become a full-sized fairy. That's a WAG of mine.
Tilly? If he shows up, it could go either way. I do believe we'll see complications with humans becoming aware of the supernatural, but he isn't
needed to play a role in that, so he's not safe.
Marcone needs to have a final showdown with Harry, and this book will be busy enough as it is, so he lives. There's no guarantee how many of his employees will survive, so Hendricks and Gard are in danger.
Lea still needs to explain her deal with Maggie Sr., and I feel like that's probably in a future book. But I'm not sure enough to bet money on that.
Elaine's most likely keeping her head down and avoiding the WC's notice by downplaying her talents, but if she shows up, she's vulnerable, because her death would hurt Harry badly.
I don't see much chance of changes in the Summer Court, although it might be amusing to see Harry's reaction if Titania ascends to Mother. (I don't predict it, but that would be fun.) Titania hates Harry, so it tortures him more if she lives. Two Summer Ladies have died already, so Sarissa should be safe... but Fix isn't. Having someone who knows and somewhat trusts Harry as his opposite Knight is a little too convenient for Harry...
Based on the Christmas story, we already know Mab and Molly are safe, and by extension, Mother Winter is too. But the Erlking likes to hunt Harry's enemies, so if he shows up, he's vulnerable. After all, one way to survive the Wild Hunt is to defeat its leader. (I know it won't take place on Halloween, but I doubt that's the
only way to kill an Immortal.)
Butters just got the job, so he should be okay. Ammorachius is still out of play. So there's only one Sword we haven't seen change hands yet... Sanya's. I don't
want to see him die, but it's possible.
Ivy is safe-- she's too important to kill, until there's a backup for the Archive. Kincaid might sacrifice himself to save her, or he might live.
And I've practically written a book, so I should stop here.