True. No BLU iteration are the same. I look at BLU as the quintessential weird mage. It learns and uses bizarre magic from monsters that covers a whole range of functions. Which ranges from situational and silly to essential and overpowered.
That to me just wouldn't work for XIV in a competitive and group settings. It didn't really work for XI either since it's much harder to accomplish that fantasy in an MMO.
For XIV, by trying to make it another job, they will have to completely alter that fantasy. At best it'd be like RDM where they create lore fluff on how it masters all monster skills, but in practical sense all of its skills will be geared towards damage with 3 or so for utility. And I didn't like it when RDM did that and wouldn't like it for BLU.
This version of BLU isn't perfect and needs more support. However, I prefer this to just another cookie cutter caster DPS. That's how I look at it. We all have our own job fantasies and it's perfectly fine to disagree on them.