So thinking about the difference between villages around Furthest and the rest of Tarsh means thinking about the difference between Saird and lowland Peloria.
Tarsh was settled by two very different waves of colonists. The first was the largest. These were settlers from the area traditionally called Saird (modern Holay, Aggar, Imther, and Vanch) that came to Dragon Pass in the aftermath of the Conquering Daughter. Now the distances involved are not very great – it is only about 150 km from Filichet to Bagnot – which meant it was easy for waves of settlers to travel with their herds and families into what became Tarsh.
Saird in the First Wane would have been a collection of chieftains and petty cities at the frontier of Dragon-haunted Dragon Pass, loosely united into the Kynnelfing Alliance. Generations before many had fought for Jannisor. The people were farmers with herds of sheep and cattle. The people were mostly Orlanth Thunderous or Adventurous types, with a large minority of Yelmalio cultists and other Lightbringers. However, they had centuries of sustained cultural interchange and trade with Dara Happa – Yelm was viewed as a more or less equal contender with Orlanth for rulership of the world and for the love of Ernalda.
By 1450, these Orlanth Thunderous types had settled a broad belt alongside the Oslira and Black Eel rivers, up to Shakeland and Wintertop and then hopping over the River to the Far Point and the Donalf Flats. A powerful Orlanth Rex dynasty based at Bagnot had ruled over them for over a hundred years, but the dynasty was killed without heir in 1448. After a civil war, a new dynasty from Wintertop was crowned in Bagnot.
These settlements would have been indistinguishable from those in Holay, Aggar, or Imther. Wheat and barley would be the main crops, pigs, sheep, and cattle the main livestock. Villages were initially unwalled, but the dynasts built many fortresses and walls after 1375 and unwalled villages were rare by the time of the civil war.
Beneath the dynasts and priestly lineages at Shaker Temple or Haruvernalda, most folk would belong to free settler families or their unfree slaves (taken in war with the Lunar Provinces or the nomads). However, between these groups were an influential class of mounted warriors (“thanes”) who gained power, wealth, and status in the wars against the nomads of Peloria. Cavalry mainly took the form of heavy, close combat cavalry backed up by light scouts and horse archers.
Saird itself is mostly riverine plains surrounded by a bowl of hills maybe 75 km by 140 km in dimension. Think something like the Pannonian Basin around Budapest. Building techniques would be heavily influenced by Dara Happa (just as in Sartar they are heavily influenced by Esrolia).