In current PUP Native Scout was added by default to native Americans which is a great change because now they can counter mercenaries like Euro civs with Spy.
However Native Scout deals only 25 damage to mercenaries and have build limit of 5. So it is not possible to deal any significant damage to mercs with this unit.
(Spy for comparison deals 100 damage to mercenaries and 200 to Explorers with one hit).
My idea is - Native Scout should have the same stats and cost as Spy. Advanced Scouts card should work similar to Agents card for Euro civs.