hetswap | Nomination Queries

Hi all! Sorry for somewhat radio silence, been busy.

I have just about all the noms up to this point approved (thanks to adding on a second tag moderator since I got a bit overwhelmed. Thanks for the enthusiasm though!), but just have a few queries about some of the noms:

The Sandman (Comics): Someone nominated Destruction of the Endless/Ishtar and AO3 is suggesting a switch to Beili/Destruction of the Endless which is the canonical. Is this a safe swap to do or are Beili and Ishtar two separate characters?
Two queries in Misfits (TV 2009)
- Alisha Daniels/Superhoodie: Who is Superhoodie, I couldn't locate this person when researching the show.
- Simon Bellamy/Curtis Donovan as Melissa: I did research and know that Curtis Donovan and Melissa are the same person (canon genderswap, which is allowed). However, would Simon Bellamy/Melissa be a better tag to use?
The Flash (TV 2014): Both Caitlin Snow/Eddie Thawne and Killer Frost/Eddie Thawn were nominated. Research says Caitlin Snow and Killer Frost are the same person? Any reason why they should be split?
Bates Motel (2013): Pairings nominated were Caleb Calhoun/Marion Crane, Norma Bates/Alex Romero, Norma Bates/Caleb Calhoun, Norma Bates/Norman Bates, and Norman Bates/Cody Brennan. However, all of these characters appear in the Bates Motel TV show, but not the 2013 movie. Would changing the fandom to the TV show work?
The Hobbit - All Media Types: Pairings nominated wre Bard the Bowman/Dís, Bofur (Tolkien)/Tilda (Hobbit Movies), Dís/Thranduil (Tolkien), Éowyn/Frerin (Tolkien), and Kíli (Tolkien)/Tauriel (Hobbit Movies). Did the nominator want the book or the movies?

I think we're at a point where these (and anything added since I post this) would be all left to approve!