We said no, was the long story short, and asked him what the situation was. Apparently the Greater Good had reached Caliginous VIIII. They had become a recent addition to the Tau Empire, and the Imperial sympathizers there (including the former king and his retainers) were growing restless under their yoke. The folks of Caliginous VIIII were a vibrant and violent lot, used to telling others to go to hell when asked to bend the knee.
The Tau had pushed them into line with orbital bombardment and occupation forces (Kroot, particularly,) but the planet was, despite a century of control by them, still rebellious and unyielding. They just weren't going to submit. They needed a savior. Well, that sounded good enough to us. We loaded up all of our best toys onto the Temporary Solution and our flagship, the Gift Horse, and set sail for high adventure!
When we arrived at Caliginous VIIII, we first became cognizant of two Tau vessels (merchant class, I believe) hovering over it. That they needed so much firepower there at all times was a good indicator of these peoples' spirit. We made contact, and the Captain introduced himself as a third party looking to trade, and try to find some old family of his. The Tau accepted this, because hey, they needed all the help they could get.
We went planetside, and spoke with some people (including the former king, now more like a public representative) to ascertain what exactly we were going to have to do to get a slice of this pie. The rebels hadn't sprung their revolt yet, they wanted guns, firepower, and a chance for the king to escape, and seek aid from the Imperium should they fail. We agreed. I oversaw the establishment of numerous warehouses filled with "mercantile goods" and the like, all across the major cities of the world, and we also ensured the presence of a hidden dropship in the resteraunt next to the king's home.
And then we called the Tau, and told them about the offer we'd been made.