I don’t think Biles needs to stay away from difficulty at all unless there is a physical limitation. She just needs to not put all the pressure on herself to be perfect and carry the team, which will probably take care of itself on a 5 person team with other former Olympians, and with the media treating her a bit differently this time. Personally I think there’s a high chance Biles wouldn’t have melted down if Skinner was on the team instead of the bland, lower-scoring McCallum. There was nobody else on that team with an equal level of experience; she needed the steadying presence of someone who was her age and reliable.