Not sure if it's been suggested or discussed before, but since all trimmed armour has different item tags while being the same armour, I guess it would be possible to easily make and texture specific armour sets using new trims. That would allow to make, for example, bondrewd-kind armour thay would reduce curse effects (and allowing you to survive on L6 when it comes out) with cartridges in inventory, or climbing gear that would increase stamina, and add a custom texture to all of it. Basically, advantages of this method is that it makes possible to re-texture type of armour and give it custom effects while on base level it'll remain the same armour. Also it'll make it possible to sell trims as "upgrade kits" so people can just buy them and apply on existing armour.
and with this you can make custom patreon armour as well
#Making custom armour with new trims
signal rune
sweet sinew
Trims could be used for custom armor but could also just use the 1.17+ shader version. Trims would require datapacks and would be abit scuffed