You would need to know the fulfillment of the plan to determine whether or not it were malevolent. Evil lacks nature, and is the result of creatures rebelling against the "Planner" with their freewill - given to them by their Creator.
In certain christian mythos heaven is the "beatific vision" the permission to look upon the face of god for all eternity. Maybe it's just me, but if a supreme being needs that kind of fawning from its' flawed finite creations there's a serious ego issue at play.
The Beatific Vision - "to make blessed" - is the gift of Grace which allows a finite creature of God to share directly for all eternity (which God is) in His Glory. The final summation of "The Plan". The Supreme Being doesn't need this "fawning" from His creatures, rather He Wills to bestow this supernatural happiness, namely Himself, on those who freely choose it/Him. Indeed, from a Christian perspective, the central mystery of God that He has revealed to us about Himself is that God is an Infinite Being of three Divine Persons absolutely united together in communion so as to share completely in One Nature.
As I see it hell must have a far more interesting group of people.
That's the problem. There are no groups of people in hell. It is a final state of being, chosen through fault of the individuals who may end there, of complete isolation and loneliness.