Honestly for a pilot and something as densely written as HS, I think they did okay. Coolness and aloofness being synonymous as they used to be when the comic started is no longer the case and Dave's overtly overbearing persona seems more in line with both today's coolness and a good way to adapt the fact that the boy's mouth runs like a fuckin' motor tbh, without mentioning the fact that the whole of Dave's thing in the first acts is how much of a facade he's constantly wearing. I was slightly more bothered maybe with Rose's characterization as more stuck up than I would have expected, specially if we're priming the silliness that is Act 1 Rose buuut as all others have said, it's a proof of concept and as such it establishes a coherent introductory adaptation of the character dynamics we have had YEARS to micro-analyze haha. Love Jade's bubblyness coming to fore and while she seems a little flatter, it builds the necessary mistique. Overall happy but the denser part of all characters are yet to come so if we do get a full series, I think the challenge of maintaining a similarly steady building rhythm as the comic within the constrains of modern independent animation will be the wall against which the characterizations will crash, if they do.