That's actually a huge part of why I'm saying 'maybe wait before demanding.'
Imagine this: They release BLU and it's the most awesome class ever and you love it in everything you do and want to take it everywhere so you push really really hard to get them to make it unlimited because by golly we should be able to raid as BLU and do DF queues ans BLU and everything.
SE does something most MMO companies are bad about...and listens to us, and goes 'okay, let's make BLU unlimited.' So they take away our favorite spells because they're too powerful for premade group content and take away our method of gaining spells because it's too hard on new players to the class and take away or stop updating the Masked Carnival (akin to Gold Saucer) because it's no longer something they have dev hours to focus on and within 1-2 expansions it's basically red mage with different animations. If you think that can't happen, I invite you to look at 4.0 SMN/SCH/WAR after they were 'too powerful' in late HW...yes, they're mostly fixed now, but they're not what they were. Or think about all the things that they just barely added in 4.0 for SMN that people have been asking for since before 2.0 (like Bahamut). Or think about the changes they made to 4.0 MCH that made it so people who loved 3.0 MCH hate it now.
Or let's say they go really extreme...and decide to not add the class until such a time that they feel it fits the model the other classes have in unlimited content...and we never see BLU in FFXIV at all...ever. Wouldn't it make more sense to see if what they're offering us now is better than some of the potential alternatives before we throw a fit just because it can't access one small portion of the game?
edit: Example for taking away spells because too powerful...they nerfed SMN to be weaker without Bahamut in 4.0 than it was without in 3.0...basically made it so a more complicated rotation does basically the same percentage of damage.
Example for taking away ways of getting abilities because it's too hard for new players: remember when 'role actions' used to be 'cross-class' abilities and PLD could cast Protect and Stoneskin? Remember when Stoneskin existed? Remember when WAR could use Flash?