No, you have it right. In my team, for example, (Phione, Cincinno, Dragalge, Zoroark, Shuckle, and Mega Beedril) I have 2 sweepers, 1 bulky attacker, 2 stallers, and a Hydrest Phione. While there is no specific core, the beauty is that any one of my pokemon can be taken out and my team isn't...