More uses for emeralds could be nice, because there aren't alot of uses for that right now like.
Add the ability to upgrade armor. (3-5Ems cost)
Even the ability to go from dia to netherite in normal
And the ability to get 1/2 more levels of prot after netherite in overpowered (called emerald armor)
Speed 1 for 1 minute (3Ems)
Jump boost 2 for 1 minute (3Ems)
On overpowered. 1 extra level of sharpness (after netherite)
This would make emeralds a bit better and the people who atleast have them alot wont only use them on a totem of undying.