The Harry Potter franchise is a pop culture phenomenon. The movies are some of the most popular ever created. Everyone can't get enough of the Wizarding World, so much that HBO is developing its own Harry Potter TV series, starting from the ground up with an entirely new cast. HBO has set a 10-year commitment to faithfully adapting all seven novels by J.K. Rowling.

Naturally, everyone is curious as to whether any of the cast from the original Harry Potter movies are keen to get involved. Obviously, as many of them were child actors, it'd be untenable for them to reprise their original roles. A few cast members have indicated that they'd be interested in returning. For instance, Bonnie Wright (Ginny Weasley) is on record of saying she's "open" to the prospect of making some sort of appearance.

HBO show aside, fans of the original movies have always pondered whether...