I personally don't ship Val/Thor mainly because Jane Foster/Thor is my Thor ship.

That said, I really like the relationship between Valkyrie and Thor and how it develops from mistrust to genuine respect to friendship. I love that aspect and while I can see it growing into a romantic relationship with more of a story arc, I just enjoy the friendship. :-)

Canon wise, after seeing how Thor/Jane and other pairings were handled I also worry how Thor/Val would be developed well. Sometimes I feel, fanfiction is a safer route for us fans!