Permanently killing off the clown of the comic? I doubt Hussie would kill him off, because nothing he was doing had been explained yet. Not to mention the effect having Gamzee around does to the fandom, and Hussie's own sort of fixation on clowns(at least in his published works). If he does die, he'll probably come back as a ghost for awhile, or this will turn out to be some alternate Gamzee or Gamzee's final death here, but in non-chronological order so that he will end up showing up later to explain what all of his random hyjinks were about and how the readers should have been paying attention to random parts of the comic.
I mean, Hussie is obviously using Gamzee for something big, plot-related. He's been able to mess around in the alternate Earth pretty much freely, years before the meteor(which is going as fast as possible) has even gotten there. The same with Caliborn's planet(which have all been in Skaia though, where Gamzee was able to chucklevoodoo things, so that might already explain it).
Anyway, it would be a silly way to
permanently kill off Gamzee, who is probably one of the more complicated and mysterious characters in Homestuck right now. Though since it's Hussie, he might be killing him off sheerly because of this.
Too bad it's not a gif.
Edit: Oh also what Soadreqm said. Hussie will likely find some way to mess with the fans who are now having a field day over Gamzee's death. His Twitter awhile ago was teasing Nepetaquest so it would all go hand-in-hand.