Kai Dracon
Writing a dinosaur space opera symphony
The twins make perfect sense since they are classic Avengers.
I do think magic might seem a little out of place. Didn't they describe magic in Thor as advanced science that most humans don't understand, or something like that? They could just have his powers and the Eye of Agamotto be cosmic-based.
When Odin rips modules off Thor's chest armor in Thor, they went so far to show little energy bits like circuits or nanomachines sparking and scattering. They''ve definitely stuck to "cosmic super science" rather than true mysticism.
One thought is Dr. Strange could be accessing cosmic forces normally out of human pay grade by experimenting with "incantations" using a piece of alien tech, yeah like how the Eye could be portrayed. Not understanding how it works but knowing how to activate certain effects, as if spells.