The treehouses in villages could have less stairs!
From wiki:
Urgals, or the Urgralgra, are barbaric creatures with a nasty disposition. They are hunters, ruthless, and rude. King Galbatorix (known as "Ushnark the Mighty" to Urgals) employs many of the Urgals. Urgals come in many shapes and sizes. As the Prologue of Eragon says,