To people saying RDM will just end up being not good enough if it's a Jack of all Trades, perhaps that is more down to the enemies being faced. If they job-lock you in certain dungeons then this problem would go away. What happens if there are fights in that dungeon where you need more healers than in others which would require more attackers? In order to win in such a case, you would need a versatile job - hello, RDM. There should be certain endgame content designed to cater for the various different jobs available to us. Also, if Bard can do damage from range while buffing and curing when needed, why not RDM? Give them perhaps WAR level melee damage, obviously less defence/HP to sort out the tanking issue, and magic. Simples. If there's a problem where RDM constantly gets turned into healer-only or magic-only, then the obvious solution is to lower the MP available.