The relentless universe-building of the Marvel Studios output, with its seemingly endless introductions to (cinematically) new heroes and villains, can be exhausting, so I hardly want to make matters more complicated. Yet after seeing writer/director Ryan Coogler's enthralling, imaginative, fantastically enjoyable Black Panther, I'd be totally on-board with nearly a dozen spin-off series for debuting characters – even characters who expire before the end credits roll. I mean, hey, if Saw's serial killer and that Insidious medium can keep coming back for more … .