BLU will probably never be implemented the way we want. As badly as we all want a modern BLU to main as in this game, they've relegated it to mid-expansion side content to try and bank off of BLU's popularity when the population is lower.

FFXI made me fall in love with BLU ten times over. FFXIV made me finally stop caring about it. All of the excuses they use just don't justify how BLU works in this game. They didn't want to nerf "powerful spells" for the sake of balance in this game, but it costs us the ability to actually play it with people. In an MMO. I'm sure most of us wouldn't mind weaker effects if we could actually main our favorite job, clearing content with our friends.

But hey at least we can cast White Wind by ourselves!

And requiring people to get spells isn't as big of a deal as Yoshi-P made it out to be. People adapt and learn how to play the game. Especially most of us that love the job anyway.