I think the Angel's wings were tied to his powers because the wings were his powers.... he never lost the other aspects of his powers (Light bones and high-altitude breathing).
Maybe for a player character, a basic inhuman set with the catch unholy stuff for the toughness and recovery. Give him wings and some true believer powers and he's ready. Still, that's submerged, so maybe it's possible to drop the strength power to lower it a few power levels. It all depends which angel is their parent. If it's a weak one, then they won't be that strong for their powers. If it's the archangel michael, then they're going to be heavy hitters.