Eventually? More than most X-properties, Excalibur relies on some pretty heavy legacy elements – you need to really care about the relationships between Kitty and Rachel, and Kitty and Kurt, and to a lesser extent between Betsy and Brian, in order for the emotional elements of the premise to land.
Then you’d need to find a writer/director who can do action, screwball comedy, feel-good emotions, and surreal genre parody all at the same time. Taika Waititi would be a natural pick, but I dunno if he’d want to reprise and/or might be busy with other Marvel properties (ditto James Gunn); Edgar Wright would be a good pick too, but he’s probably way too pissed off at Marvel; maybe Greta Gerwig if she’s interested?
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