General Haftar is at the point of conquering most of Libya.

The UN has settled its mandate on another government. It might be better, or might only be more politically convenient for the great powers.

From what I've read in news articles, I can't begin to guess whether Haftar is better or worse than that, and than the warlords and militias that control the other parts of Libya now. It might be good for Libya to have peace instead of militias fighting. However, their opposition to Haftar him might make it just as hard for him to control their cities as it is for them to control the cities Haftar holds.