I would reroll AD to CDR. I think AD is still bugged (especially with EP).
I got this beauty:
Now, I have 2 options: Reroll Base Damage to get ~ 3000 DPS or reroll +Damage to 10% CDR and have 2620 DPS.
Do you think 10% CDR is more valuable than 400 DPS?
If you reroll your base Damage, you can get up to ~ 2840 DPS without losing Vit or CDR.
If you reroll either Vit or CDR to +10% Damage, you can get your DPS up to ~ 2890 DPS.
I would go with option 1, but consider that you might have to use a lot of mats before getting the nearly perfect roll.
This weapon will be replaced soon anyways