First, a tier list for the rough order these stories will be completed. (The worlds will get their time in the sun on a rough rotation, this is just the order I'd like them to be finished.)
Tier 1: Best Starting Places
Chronicles of the Crescent Blade (Xenoblade 1) and The Last Contact Part 1 (Xenogears Disc 1)
Tier 2: Different but Critical
The Voyage Home (Xenosaga) and Childhood's End (Xenoblade X)
Tier 3: Better with Context
The Road to Shambhala (Xenoblade 2)
Tier 4: Best As Finales
Chariots of Fire (Xenoblade 3) and The Last Contact Part 2 (Xenogears Disc 2)
Table of Contents
Chapter 1- Table of Contents
Chapter 2- The Road to Shambhala (Xenoblade 2, Switch)
Chapter 3- The Road to Shambhala: Menagerie
Chapter 4- Chariots of Fire (Xenoblade 3, Switch)
Chapter 5- Chariots of Fire: Stranger From a Strange Land
Chapter 6- Chronicles of the Crescent Blade (Xenoblade 1, Wii/ New 3DS/ Switch)
Chapter 7- Chronicles of the Crescent Blade: The Singing Cave
Chapter 8- Chronicles of the Crescent Blade: The Battle of Colony 9
Chapter 9- The Last Contact (Xenogears, Playstation 1/3)
Chapter 10- The Last Contact: The Storm
Chapter 11- The Last Contact: The Woman in the Woods
Chapter 12- The Voyage Home (Xenosaga, Playstation 2)
Chapter 13- The Voyage Home: The Discovery
Chapter 14- The Voyage Home: Gnosis
Chapter 15- The Voyage Home: The Serenity
Chapter 16- Childhood's End (Xenoblade X, Wii U)
Chapter 17- Childhood's End: Orientation
Chapter 18- The Road to Shambhala: The Flamebringer
Chapter 19- The Road to Shambhala: Jailbreak
Chapter 20- The Last Contact: The Sands of Vale
Chapter 21- The Last Contact: The Sand Pirates
Chapter 22- The Last Contact: Jaune's Choice