If Semrau leaves, I would think Smesko would be the leading candidate.
I agree it seems strange for her to turn Washington down only to be interested in USC but a few things. First, USC already is premade. They have a loaded roster, even without Rogers and she could likely make them contenders in one season or two. Washington will be much weaker although I think Langley will do a fine job. At this stage in her career, I doubt she's interested in the work involved there. Second, she's close enough to Seattle and her parents to be comfortable, albeit not in the same city. And yes, she'd be competing with her former pupil Cori Close and I think that would be appealing to her. There is a new AD at USC and this is said to be an important hire for him, especially with so much unhappiness around the football program. I think he'd have to cough up at least 800k to land Sue and that might be a stretch. However, he has shown that he will pay huge salaries to almost anyone involved with football, so who knows.
But I think it will be Aaron Johnston although Curt Miller showed up in Twitter a few days ago wearing USC gear.
And HuskyMJ, you should be getting an email from them. They say they've been swamped with requests but will send you a link with information. It took them about three days to get back to me.