This would be a nice sized collection of Thor stories, from the What If? series. Most of them don't actually focus on Thor, but on Thor and others, or those who might have gained the hammer of Thor, other than Don Blake. Still, when it's Jane Foster, Loki, or Rogue, those are interesting stories. However, when you also get the Avengers, Conan the Barbarian, the X-Men, Asgard and Galactus, now you have an epic collection!.
For the cover, I'd be tempted to go with WI ('77) #10, with Jane Foster-Thor (Thordis), but the pose has been used on umpteen covers. I think I'd rather go with WI ('89) #12, with Storm-Thor crossing hammers with Frog-Thor, but with the background recolored to something besides pink.
Would you buy it? Let me know in the comments, and thanks for reading.