The obviously superior human being known as Siskoid shares his thoughts on the usually obviously inferior works of creativity known as reboots. And comes up with an interesting and, to us anyway, genuinely new perspective:
Continuations
by Siskoid
So I was perusing the Buffy the Vampire Slayer Season 8 comics series, 
kicked off by Joss Whedon himself, and positing what happened after the cult series ran its course. It’s got the Scoobies running an international group of 500 slayers, Giles working with Faith, the military investigating the hole in the ground that used to be Sunnyvale, villains both old and new, and Dawn turning into a giant and a centaur due to… unprotected sex with a demon? Let’s just say it throws you into the deep end from issue one and goes from there.
Continuing celebrated franchises in comics form isn’t unique to Buffy, plenty of movies and television series have spun off into comics to tell interstitial stories and to continue the sagas. Star Wars is an early example, as are Star Trek and Doctor Who, but early examples don’t have the same function Buffy Season 8 does. First, those are franchises that have kept going, putting in doubt the canonicity of any comics (or other media) material, but more importantly, they were crafted at a time when there was no way to easily revisit your beloved franchise. No VCRs or DVDs, no streaming services, no Internet, even movie theaters were simpler and had fewer screens (NOTHING ever stayed more than a week in my local cinema in the 80s)… Even straight adaptations of the material become worthwhile because that’s the only way you can re-experience the material ON DEMAND. Yes, television shows might be syndicated and run an episode (not of your choosing) every week night, but you’re really at the mercy of local stations, and your favorite show might drop off the schedule completely. Movies are even harder to come by.