I've never understood developers who refuse to give straight answers. Once the game is done all the information will be out there, and there may even be walkthroughs and mods. So, avoiding answers now doesn't matter in the long run it just makes people wonder and then act without all the information. You can keep specifics to a minimum but giving the context (at least some of it) of the beast stuff isn't a spoiler any more than announcing beast stuff at all is. For example, with the incest, we know it is there, we know there is only one character on the island we are related to (Baring some twist), so we know the "what," and the "who," but we don't know the "why," "when," or "how," yet. So there is still plenty to learn and play to see. In the same way, a little extra "who," or "how," to go with the "what," of the beast stuff wouldn't be a spoiler, it would only help get people excited for, or help them to avoid, the game if they had a little more info.