Suggestions.

1.) Level 15 through 47 dungeons can be change to 4 man parties + 1 random slot. The 5th slot isn't always needed to start the dungeon yet it would help new players out who have priority on that 5th slot.
2.) Chocobos finally being able to queue up for dungeons but needs a complete light party since everyone builds their Chocobos differently.
3.) NPC or ghost dungeon runs. Has a 10 or 20 percent EXP penalty but you wont have to wait for queue timers. Yet these dungeon runs will be slow.