Pretty much every JRPG battle system has its little way to be broken and this is why I love them. The element grid in Chrono Cross, the AP/Combo system in Xenogears, the whatever the thing is in Xenoblade 2, the Persona "not Pokémon at all, I swear" battles... And, of course, the junction system in Final Fantasy VIII. Finally coming around junctionning was a HUGE step. When I did, I came around it and broke the game my way, which was definitely part of the pleasure (turning ennemies into cards, refining cards into objects, objects into magic, poof, profit)
JRPGs are fun. Also, I need a life.