Levelling from 38 to 40 requires the player to fight the last pre-Godcat encounter over 100 times. That's not an issue in the premium version but it's still a tedious and easily repeated task.
I'm so glad that crap's not as much an issue in 5, but Christ almighty...
I've yet to test if you can transfer save files from the premium version to the free one but if it is possible, this game would be four stars.