I can't imagine the fecal-hurricane that will hit reddit if one of the most promised and expected feature gets tied to some crazy stupid legendary rune/sigil grind.

Well if there is no solution for players without legendary equipment, I'd say it's well deserved.

That said, I think / hope it was just worded poorly, they propably meant with the last big pieces of the legendary puzzle (being runes and sigils (the missing trinkets are just copy / paste at this point)), the build templates will be the ultimate QoL for those players, as they don't need to keep multiple armor sets or runes in their inventory.

Other players may have to keep the items in their inventory in order to swap to them, maybe.