Speaking with Total Film magazine to promote his role as Loki in "Thor: The Dark World," Marvel fan favorite actor Tom Hiddleston was asked about what he'd like to see in a stand alone Loki movie were they ever to do one. Turns out, he has an idea in mind:
"When I was first reading the comics, [Loki's] relationship with the Enchantress was one of the really fun things I thought would be good to explore… [I] may have even pitched it to Kevin Feige at some point."
So what makes the relationship interesting enough to explore:
"Because she is as sneaky and as untrustworthy as he was. They basically had a really fantastic and twisted relationship until they both say, 'You know what? I don’t trust you as far as I can throw you. It’s over.' Because they keep betraying each other, in a way. So it could be good."