First thanks to making the quick link to start expedition anywhere in the Fort. Great step
Next steps should be:
1) Allow you to jump to start exp screen from Forge. That is natural, after you customized your javelin, it should go right away, not back to Fort, and Expedition screen again.
2) In the Forge, it should always allow you to press "options" (ps4) to get to check challenges. Now it is still accessible by first select a gear or weapon screen. But making it to the whole forge screen will be great, helps people check their challenges and trophy hunting.
3) In the "options" screen since you use L1 or R2 to navigate topics, why don't you use left and right to go deep to the menu? (instead of press O and X). Again it is more natural to use left and right, at least for me.