There's only 2 things I've disliked, and won't mind seeing them go.

1. Being required to play whatever minigame. Granted, I really liked FFX's Blitzball, but I've hated all the card games, FFX-2's version of Blitzball, and Sphere Break.

2. Random Battles. Chrono Cross was great in that I only had to fight when I wanted to. Which pretty much meant bosses only. Glad that FFXII is doing away with random battles, here's hoping they get rid of the required minigame too.