Would you be ok with a new character / player who has the appropriate expansion registered, being able to make a new character and pick one of the new jobs to play as from level 1, provided they do not get any job quests till their intended unlock level? What I mean by intended unlock level is of course SAM and RDM start at lvl 50. So the new player wouldn't get any job quests till lvl 50, and their job unlock quest for said job would be cleared already.