Grounded while being runner in KF would be awful. My suggestion would be making new, raid specific modifiers, such as making you do less damage to oracles in VoG, making the presence of crota active throughout the entire raid, adding a 25% health-lock to the Warpriest, making orbs not respawn in Golgoroth, and making bombs disappear after one cycle in Oryx, etc. Vault of Glass and Crota's End would be more challenging in general and King's Fall would make Warpriest harder by making it so you have to use all three obelisks, Golgoroth by making one orb impossible, and Oryx by making 16 orb impossible. These are only a few modifiers that would be created tho

The problem with the KF mod is that it would make the Oryx challenge impossible

I have an idea for the name for the Crota one. "Use Red Death"

Yes lets goooooo! Its training day You better run faster then what your gpa's dropping, ha! If thats even possible lets goooooo! (Not ment as an insult. Just a funny thing i find motivating.)😊😆🙄