I think Puppetmaster will be implemented into Final Fantasy XIV in either 5.0 or 6.0 when we actually go to the Garlean Empire itself. Puppetmaster is clearly a mechanic job in which uses technology as a weapon, so it would be a class most suited to be introduced when we visit the Garlean Empire because I imagine it would come from a discipline of Magitek users whom harness the technology home to the Garlean empire to create war mammets/automatons. I would honestly be extremely surprised if Puppetmaster didn't get implemented when we visit Garlemald just because it's the only job class I could think of that would be the most fitting lore wise to the Garlean Empire.
Also we'll definitely be visiting Garlamald before the end of 6.0 because it was mentioned in one of the live letters that the Garlean threat will be stopped by the end of 6.0 and potentially earlier.
As far as this thread goes, I'm mostly on board with this. Although I may not agree with some of its concepts for how Puppetmaster would be played, I think we'd both agree on a general play style and on the very fact that Puppetmaster should be added to Final Fantasy XIV.
One important thing that I don't think is mentioned that I think is integral to the job is multiple pets. I think, at the very least, Puppetmaster should have a healer/support, a tank, and a dps automaton. From a Final Fantasy XI player prospective, I really can't envision puppetmaster without having multiple automatons which enable for situational versatility. It might be hard to implement multiple pets that are proficient in their role especially if you're able to swap them out at any point during a battle, but I could imagine that they could make it so that during instance fights, you're locked into a specific Automaton Role so that it isn't exactly overpowered.
One simple solution to this would be to make the Automaton itself an equippable weapon. In this instance, the Automaton itself would be your main hand weapon you would equip and acquire through battles that could be of three or more different weapon types (Healer, DPS, or Tank). If you equip the Tank class as your main hand weapon, it would basically act as almost changing your class itself and force you to always stay locked into using a Tank puppet during instances with no way to switch out. That way, Puppetmaster would be able to queue into duties as any of the three roles based off of its Automaton Class and would be able to play proficiently within that role because it wouldn't be overpowered that they can switch roles during instances, as opposed to how summoner pets are watered down counterparts of their role (Titan = Tank, Ifrit = DPS, Garuda = Ranged dps)
The upside to this is that you would have access to tons of mammet styles. For example, you would get Automaton's as weapons from all content including primals so you would get like a Ifrit style Automaton or a Ravana style automaton with completely different armor styles.
The downside is that it could become cumbersome on your inventory carrying around three or more automatons all the time as weapons, however they are adding more inventory space in 4.0.
I personally would rather it just be that Puppetmaster have access to summoning one of three pets or more, at any point in time during a battle, and each pet is extrodinarily proficient at its job in the same way a Paladin would be or a White mage would be. However this might be over powered and hard to balance.
I personally wouldn't mind them copy and pasting literally the same playstyle of Final Fantasy XI into a XIV, but another cool idea would be them placing more emphasis on the master controlling the pet and pretty much becoming it. As opposed to the Master and Pet fighting at the same time, you could have the Pet pretty much doing all the work while the master sits in the back pulling the string and doing a few things like healing the pet, buffing it, and sending command.
What I am kind of imagining and hoping they would do is make it so that you can literally become your pet and you play through him while the master becomes the AI which just does some basic things that you'd get out of a fairy or summoner pet. Ventriloquist literally become their puppets when they perform on stage and in the same way I would hope we could become our puppet. Less emphasis on the master and more on the puppet like it should be.
How that exactly would be implemented is hard to say because you could either switch to your pet's point of view through an ability like "Role Reversal", which is an ability in FFXI that swaps you pets HP with your own, or when you switch to the puppetmaster job class, you would automatically become your pet. The only problem that would bring up is how the pet would interact with NPCs and objects, but I'd imagine just having an ability that allows you to change PoV would be fine.