To me the greed option is fine since I would rather see gear go to somebody aside from dropping to the floor if nobody needs/can use it. I think if people were only receiving tomes (leaning more towards myth here) for their currently equipped job, that would be enough incentive for people to actually play the job they're gearing up rather than simply getting tomes on their healer/tank job in order to purchase gear for a different job which a lot of people are doing right now.