I have full DL DRG and i was thinking last night about this . I was thinking aside from the status boost you get with DRG from LNC there really is nothing special about DRG . I mean jump ok spinshatter ok , dragonfire dive ok..... aside from that nothing . LNC i think is one of the classes that it might be best to NOT have the job crystal . With other buffs you COULD add in rotation to boost DPS output . But again i have had no real issues as DRG i have done Ifrit,Garuda,Titan and all the dungeons as DRG and have had no issues . Have yet to do BC