Why do people want Blue Mage in this game?

[myahele]

BLU may not happen:

Q: I love the blue mage job that appears in the FINAL FANTASY series. Will the blue mage job ever be implemented in FFXIV?
A: I think that blue mage is an interesting job because you can learn spells from enemies, but honestly I don't think that it really fits MMORPG party settings. If anything, I think it would work solo and it would be really fun to implement it as a job where you go around and learn abilities from every monster, so I'd definitely like to try and do this, but I'm concerned when it comes to playing in a party players would put up barriers if you haven't learned certain abilities. Additionally, in the event you are able to use abilities forever once you learn them, the difficulty of learning abilities would be high, and we wouldn't be able to balance the system so it wouldn't revolve around procuring your abilities instead of equipment. This wouldn't be practical enough to fit in an MMORPG party setting and conversely if you are swapping in only certain abilities you've learned, the true image of a blue mage would diminish, so this is something that I am concerned with.

http://forum.square-enix.com/ffxiv/threads/191993

[Khalithar]

http://forum.square-enix.com/ffxiv/threads/191993

It's a good point yes, but at the same time they could just make all the abilities linked to the job quests.