I'm a bit worried about how many teams will put a FEAR tactic in their teams as a form of filler because they're low on remaining BST. That might be a "more common" threat than what is normally seen in other metagames. But otherwise this idea is pretty amazing, and will give so much depth into teambuilding. Not only are you restricted on how you pick your Pokes, but also the threat spectrum is much bigger. I'd really like to see how this would turn out.