Exactly - being able to change your Job/class in FFXI and XIV is rather unique amongst MMOs, and is indeed a breath of fresh air from all the others which just channel Gary Gygax and lock you in one class/role for the entire game.

Having said that though, it's probably the reason why most MMOs which still use subscriptions only have you pay a flat monthly fee and then allow you to create as many characters as you like without extra charges, unlike as FFXI and XIV each extra character is an additional fee - it's to compensate for being locked into a class for the whole game.

In any event, I loved the Job system in the earlier FF titles (my favourite application of it was Tactics <3) and in fact, the Job system was the very reason I first started playing FFXI in the first place all those years ago. I admit though I was a little disappointed when information about the Armoury System was first announced before FFXIV 1.0 was released by not using traditional FF Jobs, but just new generic 'classes', but it has grown on me a lot (<3 GLA), and much later I squeed when I read about Jobs being added too.

So yeah, I'm glad FFXI and XIV have changeable Jobs/classes, and would not want SE to change it for anything.