>>717756394
You can't join parties unless you don't care about making progress. You cannot do scenario dungeons with a party member at all. The only way to actually party with your friends is to go into a dungeon that you both have already completed the scenarios for, but that's just a waste of FP. Partying is really only a thing for raids, and there's no reason to do any of the pre-Bakal raids at all.
Also, all the classes added after Male Mage are dramatically worse designed than the older classes.