Introduce Artifact Primary attribute re-roller which require 10 Crystal Ore, 100K Artifacts EXP, and 20k Mora.
Re-roller attribute can be chosen e.g (Atk%, Pyro Dmg% etc.)
Each re-roll will increase the odds of the next re-roll to be the re-roller attribute by 25% start at 0%.

Cont. from suggestion 1:
Introduce Artifact Secondary Attribute re-roller which function the same. But require the target Artifact to be at max level.
Each of 4 Secondary Attribute can be re-rolled individually.
This way player can have the desired Artifact in ~75 or ~57 days.

Cont. from suggestion 2:
This changes will give players a sense of control and sense of progress.
Player will know each day they logged-in they have a real Artifact work in progress to look for into