Meh, I'm not to excited about the 5th gen right now.
Anyways, When Lati and Mence were running rampart most teams were built with a Steel core and Dragons of there own. This limiting view on building teams made it easy for me to capitalize on those teams weaknesses. Ice attacks, Choice scarf users like Porygon-Z, Magnezone to beat up Scizor, (Who was a lot more popular back then.) And a Strong steel core of my own. The new Fire-Water-Grass cores have wreaked me to be honest. Most of my teams lack strong grass pokemon of my own. (A byproduct of missing out on Celibi and Shamin.)