I'd like to start off by saying that thank you for making this thread, Doug. As pretty much anyone who knows me here knows, I've been clamoring for something like this for a long, long time. It's a relief that someone else stepped up to plate and actually did it.
That said, this topic is simply way too big to be discussed in detail in one thread. People will respond coming from a thousand directions with a thousand relevant points, and it'll all be lost in the clutter.
Can we keep this specific topic about the necessity to determine what we want in the metagame (for example, the issue about how tiering by "power" doesn't necessarily hold ultimate importance if we determine we have specifics regarding the "skill" we want to emphasize in the metagame), and make various topics for each category that talk about both the category's importance in determining the metagame and how to go about refining how we emphasize that in our metagame?