Cool idea, but will take a year or two to implement. Hive still supports specific versions of 1.18, which of course doesn’t have armor trims and neither does 1.19. So if Hive wanted to implement this, they would have to drop support for all versions below 1.20, which will happen very slowly.
Many people are upset that custom shaders are no longer possible in 1.19, and have stayed on version 1.18. This poses a challenging situation for the server to navigate, and we shall see what they do
it’s because Mojang switched the rendering engine to a different renderer, and it not only breaks old texture packs, but also doesn’t allow any further customization without a custom client or graphics cards for RTX