Unreal should not be temporary. I do the old extremes synced in mentor roulette every day and let me tell ya it just isn't the same. I only did unreal Shiva, but man was it fun. I really enjoyed it, and it was far more threatening than Shiva ex in duty finder. They could reduce the ilvl sync of old extremes and that would help but it would also make it so that nobody can access the duty with high ilvls supporting them, which is not ideal.

Basically I think they should just make the unreal fights permanent fixtures in the game and slowly rebalance new unreal fights based on older extremes. Then you can do the regular extreme with higher ilvls or you can run the unreal version for fun and challenge.