[@Vocab]Not that it has much weight, but here's my opinion on the Vulpines from a logistical POV. They're already at war overseas; and losing badly, from what you've mentioned. They're supposedly using up all their resources on this war, yet have just enough to gamble on an expedition to find a new home. But provided the expedition is successful and ekes out a suitable territory, how would they manage to exodus their entire state in the middle of a conflict? Would the expedition be better served fighting at home? What happens if the homeland is lost while the expedition is overseas, or vice-versa? 
We also have no idea who they are fighting, and why they are losing so badly. Why are they fighting in the first place, and why do they continue to do so? Could they sue for peace, if they're on the verge of defeat? Is it worth abandoning their entire homeland, if they are granted the opportunity to rule as vassals? The scale of the war is ambiguous; is it an all-or-nothing fight for survival against an impending genocide?

For what it's worth, prodding an expedition along unknown land in a last-ditch effort seems like they'd be stretching their already-thin resources even moreso. Resources that might better be spent on fighting the war, or rebuilding afterwards.