Dendra panoply - Wikipedia, the free encyclopedia
Its basically a very primitive version of the segmentata.
I wouldn't even call it primitive. It was made in the way that it was due to the nature of bronze. Not to mention there is only one example of it. It was not a very common armour type. It also was not very comfortable, and rather awkward to wear and put on.
Bronze was also notably weak against the weapons used of the day. Trying to make segmentata out of bronze would have been useless as armour.
The problem with LS, is that it takes an extremely talented smith to get consistent thickness, and hardness across a sheet of metal. With chains, it was also made in sheets (wire is actually rather difficult to make), and punched out. However, because of the nature of chain armour, the links did not have to be of consistent thickness or hardness.
The other reason it wasn't used? When it first came into use, there was a change in the legions. No longer were they supplied by Rome. They received a stipend to purchase their own gear.
If anything, I would say that the armouring of the legions is not so consistent as we might think. There likely were soldiers who were wearing Segmentata, others in the same legion wearing Hamata, and likely others who had Squamata.
Discipline was obviously important, but I think we find that we often equate discipline to uniformity. However, the concepts of uniforms don't appear to be common to Roman culture. If the armour was still functioning properly, the soldiers were allowed to wear it. It's why there is such a mix over various time periods.
A uniformed army, differentiated by unit, is really a modern notion. Things that can appear to be uniformity, likely are not. Of course there are some examples in the ancient world, it truly was rare to see an army where everyone was wearing the kit.