I think the main point here is to make it different so that it can't be associated with the previous artist. After all, the reason why it was cancelled is to stop the previous artist from dragging Dear Benjamin down with their scandals further, and that includes their art style. So I think the change in the art style and artist is a good way to be separated from that. Though I understand your opinion since a lot of readers pretty much think the same.
I saw the new release from the new artist. Honestly, the art style is not it (I've been also waiting for this and I don't want to sound ungrateful) The new art style is just far from the previous one. Nevertheless, I'm just glad it is back.