I was playing ADV again for the Tour this past weekend, and the lack of Team Preview is actually really nice. It's not too hard to adapt to the change; I managed it in a day or so. Has the enemy been conspicuously using only 5 of their Pokemon? The last one might be a cleanup Snorlax. It takes some predicting, but it's not impossible to deduce. It requires one to have an answer to everything. You can't build a team and play it like there isn't a sleepy bear in the wings unless you've either killed it or forced the enemy to use all six of their Pokemon. That's a big reason why ADV was such a slower-paced metagame. (Other than the massive move power creep*.) You can't see the entire enemy team and know that one of your Pokemon can sweep away the enemy team if you can only manage to wear down particular members. *Gen 3 Hi Jump Kick: base 85. Gen 5 Hi Jump Kick: Base 130. Gen 3 Outrage: base 90. Gen 5 Outrage: base 120. EDIT: Rayquaza_ speaks truth. Swampert would be completely amazing in the Tour if people didn't prepare for it with HP Grass on a third of their teams.