They would need to introduce or flesh out some scions (like hoary boulder) and have it be established that they are immune to tempering.

A big part of early game is set in canon as you soloing or gathering your own ragtag group to take on primals.

The quite a few bits, they (main scions) very specifically can’t help you.

It would take a small bit of writing to do it, but I would like to see a comprehensive solo with NPC experience for all story content, including raids.