have long since been answered, one way or another. The questions we don't still don't know the answers to (such as how much of what character we'll see when and where the movies split, etc.) are things they want to keep secret and certainly wouldn't have told us then. It's my observation that whenever they choose fan questions to answer they generally go for the "softball" general public stuff we already know and ignore the technical and plot-oriented questions from the dedicated fanbase. So it's annoying that they never got around to posting the original questions for whatever reason, but I think it's moot at this point.
As for scheduling, I think the timing is perhaps not entirely PJ's call. The WB PR department seems to like long drawn-out teases and minimal information at the end of them. Even though we have to wait a long time between vlogs and they don't stick to any schedule, at least when we get them they have interesting stuff in them. If it wasn't for PJ wanting to do them, I don't think we'd get much of anything out of WB.