With the current WTA and which player will win the FO, you may as well take 10 of the most likely winners and put their names in a hat and pull out one name and you will have as much probable success as if you tried to logically look at the draw and pick the winner.
In complete seriousness, I've never seen the WTA top ten this poor where there aren't any consistent winners of big titles at the top. We had Kerber but she's currently lost. Halep is the best of a bad lot on clay but she will never have the ultimate consistency and mental fortitude needed to win big titles week after week. Muguruza is an embarrassment. She's like Jekyll and Hyde, you never know which version you will get from day to day but most of time it's not a good version. Pliskova is mostly a dumb ballbasher who also is weak in the mental fortitude area. Konta has promise but is an anxious crybaby at times. Who else is there? The rest aren't worthy of mention IMO.
Azarenka and Kvitova can't come back soon enough and I know many people are Sharapova haters given her current situation, but I'll take her over the whole WTA combined in terms of a likely winner if she can overcome her obstacles at the moment.