The issue is that what you want falls into the limited job categorie.

So either they make it a limited job with all the proper fantasy around it sg the cost of not being usable in current content, or they make a fake similinlike RDM for instance which can do current content.

By that I mean, ff14 RDM is a red mage just in visual, (white and black offensive magic). It has 1 heal ... For the sake of having it and can spam rez.. but usually RDM are much more versatile. They can dps and heal. Ff14 RDM can dps and rez... And maybe do a bit of single target heal for emergency.... But beside dungeon and Ex trial you're not gonna keep more than 1 person alive with vercure..
RDM is a DPS, and nothing more (fine rez is useful). And it is a main job because they cut all the white magic aspect of it, beside the offensive spell

So compromise has to be done somewhere. For BLU they went full fantasy route and made it limited. I believe they'll do the same for Beastmsster and Puppeteers. But if they don't, well don't expect much beside cool visual. It will be 24 skills with a fixed rotation and that's it.