As it stands, even with occasional Omen Card Bonus, in order for a player to complete all 22 Artifact sets would require roughly 3.5 years.

While both Dynamis-D unlocks for Relic and Sortie Gallimafry for Empyrean Can be completed in under a year.

As the Title suggests; I believe a solution to this disparity is to have Omen Card bonus become permanent. Definitely a quality of life improvement.

Respectfully,
~ Otomis