oh please give me a break, as like u said u are repeating i too repeat that it has been seen that the segmenta was given to the citizen army and if it was in any way cumbersome then the romans would have dropped it.
but the romans did not drop it they in turn tried to simplify it further that is why we get different variations of the segmenta and even the gladius was simplified as i think all would agree with me here.
the knights plate armor was way toooo expensive and could not be dreamt of been given to the normal infantry but the segmenta as a version of plate was good against arrows and gave good protection against slash attacks too.
that is clear advantage as romes enemies like rome now fielded many skirmishers and in close melee fighting like we all know that if u want to stab at a legionary its way too difficult and if u slash, the legionary will be behind his shield and the impact will be less after it hits the shield and the armor and there can be no possibility of a clear shot at the armor unless from behind or at one on one combat.
so the roman legionary by any definition was more better armored than anybody of their time and now to think of it even romes enemies elite soldiers used mail and by fighting them if it had been found that the segmenta was weak then they would have reverted to the mail and none of this happened during romes golden period and happened only at the time of peril because after losing the riches of the east the western empire just couldnt afford it.
so guys i appeal please think it from a logical point of view keeping a lot of nerve breaking conditions in mind.