I think I understand the logic behind saying that the direction of crossing the SS is irrevelant …. but I think that if it is irrevelant in terms of geometry, it can clearly change what a pilot commitee had in mind, and/or pilot strategies, and times.
A pilot commitee might want the gaggles to wait outside a SS even when the next TP is outside the SS
In fact, making the direction irrelevant makes all SS with outer TP as exit SS
Am I making sense ?