Mmm. Not really. Most of the time I know about a game feature. It just ends up being completely hopeless or ineffective, and thats the reason I don't use it.
Like most JRPGs. They give you a 1000 skills or spells, and I generally get through the games without EVER needing to use them. It doesn't help that the so called "ultimate skills" usually have a terrible hit/success rate, or take 2 or 3 turns to charge. On normal enemies, they're dead from physical attacks (which at high levels do more damage then the ultimate skills anyway) long before the skill is charged. And for bosses, where the skills would often be handy, 97% of them are immune to every possible skill. So what's the point? Course I haven't played any of the modern JRPGs recently (Xenoblade, Last Story, Pandoras Tower) so maybe things have improved.