Definitely on-board for a Puppetmaster/Machinist/Engineer class, whatever they want to call it. I don't think it should necessarily be a job off of Musketeer but either way I'm all for it. I don't know how it worked in FFXI but they oculd use a system similar to Aion's Spiritmaster. Your pet attacks what you attack, your skillbar is full of actions for your pet, pet buffs or your own actions. I don't think there would be much trouble getting it to work right with FFXIV.