Considering that people got pretty upset over the inclusion of the Arctic Wolf and Dingo in the Arctic Pack and Australia Pack respectively, I honestly don't think that an entire pack dedicated to largely similar canines is wise.
As someone who was upset over both of those, I have no objection to a canine pack that includes different species.
On the presented list, however, the only one I think I would want would be the maned wolf. I like the Ethiopian wolf, but there aren't any in captivity, and while that isn't a requirement for inclusion it does hurt its chances. The dhole is also an interesting animal, but behaviour-wise it is pretty similar to the three wolves we already have and the African wild dog.
For me, a good well-rounded list would include:
- Maned wolf.
- Arctic fox (which should have been in the Arctic Pack).
- Japanese raccoon dog (wonderfully weird, and I'd love to build a little Japanese section in a zoo).
- Fennec fox.
I was tempted to include the bush dog rather than the fennec fox, because the bush dog is so bizarre.