Blue Mage and the Community have nothing to do with each other. The real reason Blue Mage won't work is how the armoury/class system works. Blue Mage would be stuck with the majority of base Class skills then only get 5 "Job" abilities, these quests would be the only 'classic' way of fighting monsters and learning the abilities from them. It wouldn't be RNG it wouldn't be anything near challenging, it would be just a small little 5 quest gate before you could do the relic weapons and etc. The battle system we currently have cannot support Blue Mage or Beastmaster the way people really want it too. It's like Al Bundy, you're trying to shoehorn a 9 into a 6..won't work.
Instead of asking them to reconsider Blue Mage, you should be asking them to reconsider battle/armoury/class system changes. And sadly none of that will come till 3.0 if we can believe that "changes a'coming" such as Summoner/Scholar changes.
Edit: The majority of spells/abilities Blue Mage could learn would be learned upon leveling.
