I was thinking the same thing. Like if you can complete an eternal set a Divinizer will be given as a reward to make an eternal item of that completed set a Divine item with 100% item quality and perfect x4 stats of the normal legendary and their bonuses goes beyond cap.
For example you have a complete Eternal Nadroji Set, you will be given a Nadroji Divinizer. If you use that Divinizer to the Eternal Nadroji's Crystal( the amulet, correct me if I'm wrong) you will get +12 All Skills, +12 All Talents, +8 Set Skills and so on. And it will be called Divine Nadroji's Crystal.
Hahaha. Sounds very OP.
But once a Divinizer is used, all present eternal items that belongs to the set of the new Divine item will be removed from your inventory.
And Divine items must be banned in PvP. Can only be used in PvE. Hehehe.