OGE Hover performance for the V-22 remains a limiting factor in helicopter mode.
The V-22 met the spec requirements for the program. The performance of the V-22 was primarily controlled by design constraints for shipboard stowage. That constraint is not an issue with the smaller V-280 which is also designed to meet the 6K/95 requirements.
As to the requirements for the V-22 can the 1/2 capable SB1 even fit in the hangar of an LH? It is extremely tall and you cannot fold that second rotor away.