Nothing of what you listed here is restricted to BLU, you realize that, right? Literally the only unique content that BLU gets is the carnival, and as described, it's just a bunch of boss fights except you fight them alone instead of with a group. How long do you think that'll last for, exactly? Do you think that'll be an hour long affair or something?
And you realize that, while the first iteration of blue mage is limited to level 50 and no matched instances, they also indicated future levels and future content?

You realize that the naysayers are in arms, not because there's a brand new concept in game, but because their oh-so-desired 'main' can't engage in all of the content at release?

You realize that this currently limited job is going to be introduced into the game at the end of this expansion, when any and all new content is welcome? And that it might not be so limited once SE has data showing how it plays out in 'set party instances'?

Get back to me when you actually do all of that content in an hour.