Other than looking horrendously like a face, There are some key issues.
1. Heirlands is downright massive, It is twice the size of Scathenwheld, and dwarfs the guild lands. Thus, it is nonsensical for them to want the guild lands back.
2. The crater of Nardaxus was too far from Ardon, where the ancient war ended
3. Ardon was tiny.
4. The guild had almost no coastline. The bit they did have was shared with both Drissia, the Council and Ardon. Scathenwheld and the Heirs had full control over the western seas.
5. Drissia was REALLY scattered.
6. Council had way too much land.
7. There were three rivers. On the entire continent. (this will be fixed when I'm detailing more later.)
8. Scathenwheld's capital was nowhere near a source of water. The towns were far too small as well.
Most of the Heirs plate is gone, for instance.