Option to wear armour sets from different classes as Glamour for other classes

[Gemina]

Players these days from what they wear don't seem to care a lot about this class fantasy nonsense.

It doesn't matter if they care or not. The game still remains a fantasy genre, and you only need look at how the MSQ is written, the lore that's canon, the way maps and jobs are designed, the dialogue, among many other things to know this.

I also wouldn't let the minority represent the majority. It is very common for me to see a tank in a frog outfit at the gold saucer. Seeing one in an actual duty is actually quite rare. From my experience, players really enjoy looking the part of their job or role and mixing their own flavour into it.