Mictlan

[Oversway]

Most summoned units have multiple advantages over national troops. Some of these include:
Never flee in battle
Never needs food
No gold upkeep
More powerful

Then why not give some of these abilities to national troops? In dom2, only the 'no upkeep' isn't on at least one troop. (if you count pop killing nations summons, they have no upkeep)

All of the new abilities you've suggested are cool, but I'd be just as happy to see them on summons as well.