will the kothringi be in this game because it takes place in 2E

they also died out in 2E, so idk

as the game takes place after the knathan flu id say no. We might see the crimson ship tho, even if i doubt it. It might be that the aztec like ruins in argonia (weve seen screenshots of those) are in fact of Kothringi origin. Id expect to see some Kothringi Undead too.