Q.1 Could we eventually see a job that is transformation focused in a future expansion?

An example would be like Shania from the Shadow Hearts series that would instead incarnate using any of the primal energy in the game or maybe even invoking forms from The Twelve.
https://i.ytimg.com/vi/hAiGhgHduvE/maxresdefault.jpg

If ff14 ever includes a path system for jobs, a job like the Spirit Ascendant utilizing different cosmetic full-body transformations that could fill different rolls depending how it's spec is set up could be a really interesting experience.