Skavenblight will probably be Thanquol, he is basically the leader of the faction and it’s their capital. He’s almost guaranteed to get added at some point. He’s not some uber god like Nagash or anything, he’s at best the Karl Franz of the faction and needs to be there as their actual leader. I’d bet he’s even the FLC Skaven Lord which is set to come after ME does.
Queek is out in the boonies so he can try to take Karak Eight Peaks, since that’s kind of his claim to fame. It makes a 3-way battle of sorts between him, Skarsnik and Belegar like in the lore, though they haven’t said if he gets anything special from taking it (maybe not since it will probably be easier for him?).