i'm cautiously optimistic!! I think the animation is a little awkward, and i'm not too certain about the voice acting, but it looks competent. That might come down to it being a pilot, made with a little less care and money than a full season would have. I really like the animation company they picked too, HH and HB are some of my current favorite series right now, and they're cut from a similar tumblr cloth.
Hearing Richard fucking Horvitz, Billy from Billy and Mandy and Zim from Invader Zim, just say "Homestuck," is the wildest fucking thing ever.