Honestly, they should just let you have a stat spec for your class, and a stat spec for each job. Your job wouldn't get the stat spec from your class; when equipping the gem for the job, you have to spec your stats. In the case of MRD and WAR, I wouldn't spec different. In the case of SMN and SCH, I would imagine some of you would benefit this. If MRD ever got a DPS job option down the road, it would be nice to have VIT options for WAR and STR options for the DPS job option.