June 16th, 2013, 21:08
Once the Borg assimilated one Vorta, that new drone's military intelligence would be spread throughout the collective. At that point, the Borg would know they need to shift their priority to the cloning and Katracel-white facilities. Without their white, the Jem-Hadar will die, and unless the Borg nanites were capable of ridding them of their genetic addiction, they would be useless as drones. I suppose that Borg tech could conceivably be configured to form sub-cutaneous Ketracel-white synthesizers, but I believe that this would be considered too much of an imperfection to the Borg, making them an undesirable assimilation candidate.
The next question is what would happen when the Borg finally set foot on the Founders' home planet. Remember, they already have the Vorta's knowledge and technology. There's really nothing they need on the Founders' planet, so I'm guessing they look around and leave.