With this mod (no DLC installed) I'm getting errors on launch about missing defs:

Could not resolve cross-reference: No RimWorld.FactionDef named Empire found to give to RimWorld.TraderKindDef Base_Empire_Standard

Could not resolve cross-reference: No RimWorld.RoyalTitlePermitDef named TradeSettlement found to give to RimWorld.TraderKindDef Base_Empire_Standard

Could not resolve cross-reference: No Verse.PawnKindDef named Slave_Empire found to give to RimWorld.StockGenerator_Slaves RimWorld.StockGenerator_Slaves

Could not resolve cross-reference: No RimWorld.FactionDef named Empire found to give to RimWorld.TraderKindDef Empire_Caravan_TraderGeneral

Could not resolve cross-reference: No RimWorld.RoyalTitlePermitDef named TradeCaravan found to give to RimWorld.TraderKindDef Empire_Caravan_TraderGeneral

Could not resolve cross-reference: No RimWorld.FactionDef named Empire found to give to RimWorld.TraderKindDef Empire_Caravan_TributeCollector

Could not resolve cross-reference: No RimWorld.FactionDef named Empire found to give to RimWorld.TraderKindDef Orbital_Empire

Could not resolve cross-reference: No RimWorld.RoyalTitlePermitDef named TradeOrbital found to give to RimWorld.TraderKindDef Orbital_Empire