I'm generally pleased with the game overall, there isn't anything where I'm like "OMG MUST SEE THIS," only a few things I'd like, I'd be happy with any one of them:

A Chrono Trigger event. (With no mention of Chrono Cross obviously).

Samurai tank.

Red Mage melee dps.

All gear you obtain having it's template saved so you can mix and match to your heart's content without glamour prisms.

A new class armed with a rocket launcher that fires exploding chainsaws.