For me the original concept was fine, sadly too many XIV players were stuck in XI mode and wanted to feel unique snowflakes in whatever 'role' they played, so they complained about the 'multi-classing' nature of the game as it was released.

Sadly SE caved in to this demand for retro-style character development and we went back to an XI-kinda structure, but without the simplicity of XI's job/subjob structure.

Worst of all worlds, it didn't appeal those who liked the more free-form character construction of the original nor to those stuck in the 2002 world of rigid 'dual-classing'.