I would love to see such scenario...
- Map based on Europe;
- 3 extra tribes (Scandinavians, Baltic tribes and Britanic tribes) to the current 5;
- Big map, 1001x1001 up to 5001x5001 squares;
- And whoever picks specific tribe gets spawned in their home location (Britanic in England, Scandinavians North Europe, Egypt North Africa etc.);
- Spawn whole bunch of Natar villages around that it would be possible to raid to compensate lack of enemies;
Make competition of the tribes...
- Every tribe has some sort of goals and gains points and some sort of perks for achieving them.
- Fighting with each other and conquering other tribes regions like in RoA type of map.
- Having a leader and officials who are giving orders or trying to achieve local area goals based on Kingdoms features and so on...
Basicly freedom for imagination, but I bet that would be too hard to make it reality and would never happen.