This RFE is what it says on the tin.
When I go to crush some beryl, dullite, or sparkly, I'd LOVE to know how much energy the task is going to take before I crush myself into hell in an attempt to free up an inventory slot.
Other items tell you how much energy is being used to perform the task, but this one does not.
(See: Shaking butterfly milk, squeezing butter, etc)
[UPDATE]: Adding smelting to the list, per Draron's suggestion, as it too does not reveal how much energy you are about to use. Again, this is annoying to the player who ends up with 3 energy left after smelting, and gets hit by the energy tick in-world faster than they can get into a bag to eat something (I lose 3 energy per tick).