WoL(Meteor) is just the Scions prize fighter. Only seen as a hero or weapon/tool they can use to solve all their problems. Only characters that saw WoL as a adventurer/person are either dead or presumed dead. Which were Haurchefant Greystone and Zenos Galvus. All other big names see the WoL as Hero First and Adventurer/Person second.

If they wanted to expand the WoL beyond the Scions they would have done so across multiple expansions where the WoL is there during these big events but the main character of the expansion is a new NPC.

WoL amounts to little more then the Scion's Enforcer. The Scions serve as the body while you serve as both their Sword and Shield.

You got side stories with little to no Scion involvement but even then the WoL is just taking orders from questgivers.