All the major candy spells were already in the game since the start...it's just not everyone knows about them, that's all. About what happened to Tanaka, i think this is what happens when someone from above in SE hastens you to release the game earlier.
But after all its true that every casting move or a skill move is the same animation and the spell animations are very poor, despite that we're R50 already and should have something devastating in our arsenal, not a puffs of spark that are called high level magics