So if 1 new Job in 3.X era...[spoiler]

[Duelle]

I wouldn't go that far with machinist but if they do it most likely may be a Gun Attachment for level 61 to 70 skill that change the Gun skills into Melee skills. However, we already know how people feels about change a Jobs gameplay style and changing MCh gameplay from a Range user into a Melee DPS user may cause some bad friction so doubt this may happen.

The lesson learned from this is not to refrain from introducing changes to gameplay when necessary, but to ease people into it. BRD had the misfortune of being designed around instants and off-GCD attacks and they shoehorned casting into it without revamping the job's overall gameplay to be cohesive with casting.

People wouldn't have had this issue if SE had made changes beyond adding WM and that one change to Barrage.

I've seen too much enfire (freaking little PLD wannabes casting enfire on themselves during that fight in the lv60 PLD quest) and swords lit up by Ilberd to not think that RDM is not in the pipes. What worries me is how they're going to implement it.