You're reminding me of all the awesome but less well known corners of the Marvel Universe. Satana, Son of Satan, Hellcat, all the supernatural/occult characters. Now I'm wanting a Doctor Voodoo enhanced costume for Dr. Strange haha.
I hope they don't make Brother Voodoo a costume for Strange. It would just not work, in my opinion - Voodoo's powers are much different to Strange's (even when Voodoo was the Sorcerer supreme). Voodoo's kit would make much more sense as a mixture between Luke Cage's single pet (he'd get his brother), but also Strange's and Loki's projection trees, along with his fire and voodoo-based magic. Plus they could give him some melee attacks with his staff to differentiate him further from Strange.
But a Doctor Druid costume for Strange... now we'd be talking.
But yeah, the supernatural corner of Marvel always was one of my favorite parts (along with cosmic). I love the aspects of magic and deities and demons. I also would love to see the Midnight Sons beyond Blade - Werewolf by Night and Man-Thing in particular could be incredibly fun in this game, same with the Hellstrom siblings. I also wanna beat the bums of Mordo, Dracula and the likes.
See, this kind of stuff makes me really giddy... but alas, it's not very popular, so the chances for us getting content on this corner of the MU are very slim (beyond getting maybe Dormammu to beat up). It's guaranteed we'll get to fight more symbiotes or semi-obscure X-Men villains like Mojo probably
years before we'll get to fight Mordo or Technet (if at all) or play as Brother Voodoo.