No. Absalon, as it stands, is unsuitable. It would introduce a new type with unique sensors & weapons. Also, C2 doesn't need that great big flex deck. A ship somewhat like Absalon, but with the same sensors, weapons, propulsion (though maybe a cut-down version - I reckon C2 could get away with sacrificing some speed for endurance) & basic hull as C1, & a smaller flex deck, would do very nicely.
If the RN had adopted Smart-S, ESSM, etc, then yes, I think it'd do.
If the RN had adopted Smart-S, ESSM, etc, then yes, I think it'd do.