Kalimdori
Amateur Youtuber
I wouldn't say it's so much of killing hype, as so much of missing an opportunity to build hype. Seeing a new Smash Trailer puts me on the edge of my seat, I can't wait to see who the new character is. If it's August, probably the last newcomer before the release, people are probably going to be excited to see who it is, and then they get... somebody they don't even recognize, nor were they excited for. Those who participate in the Smash community would know who they were thanks to those leaks, but the average gamer wouldn't.Don't see why Chorus Kids would exactly kill the hype.
Remember how long it took for people to warm up to the Wii Fit Trainer? Same sort of deal here.