I thought this was an interesting quip from the live letter:

"it's actually more beneficial to have different jobs in the party to help fill your limit break gauge faster. There are a lot of situations where you can use level 3 limit breaks, so if you have a strategy that calls for limit breaks at certain times, it's be more advantageous to make parties with different jobs."


I wonder if it has something to do with the stat blocks that light up as certain jobs join the group?