I’d like to see some tribes from Borneo / Indochina!
Maybe the Iban (Sea Dayaks) or Bidayuh (Land Dayaks).
Both Iban and Bidayuh get:
Headhunter
Heavy Infantry. Uses the war blowpipe at range and as the blowpipe has a spear point in the end, it is used as a spear in melee.
https://www.mediastorehouse.co.uk/p/690/dayak-headhunter-using-blowpipe-fire-poisoned-24756902.jpg.webp
Headhunting was extremely common in Borneo and rival tribes would often conduct raids and wars with each other, taking heads of as many enemies as possible. Sometimes they would cut the heads of their own with good reason (stealing/killing within the tribe) and use the unfortunate head to watch over important places such as Rice granaries to ward people away. The blowpipes were monstrously long and were seen as their very best weapon.
The Iban can also train:
War prahu"
Essentially large pirate war canoes. Earns coin on each successful hit.
Bidayuh also train:
Bidayuh Warrior
Hand shock infantry. Uses the Mandau (large machete-like sword, good for chopping heads) and Kliau shield (https://images.squarespace-cdn.com/content/v1/5ac530cff2e6b1f8c1cee361/1590353728442-SRJ9QS3ES4OA0LWVTCI5/3.+WM+Alpert+books___27.jpg?format=500w)
Maybe the techs available actually relate to the particular sub tribe for the Dayaks. Choosing the Iban tribe tech makes the Bidayuh tech disappear but give you the Iban’s ship (as they are water focused).