As you pointed twice, a vote function would partially solve this: "SasukeDevil999 DarkAngelSephirot wants to change from SCH to BRD - Do you accept this change?". Problem is... let's put it with an example. Pre-made 8-man party, 5/8 are friends. The boss dropped an item that is useful for one of them. Their friends (being the majority) vote for his friend and he changes his job. He loots. The other member got screwed. While the idea is good, I would apply it for DoH (or at least if they let you use their repair skills if you have those classes unlocked and leveled) so you can repair your gear during the run.