I miss (from CW) being able to specify which systems of energy resupply to request—like toggling build/repair, ammo provision, arm/disarm (to be able to stock a ship up on ammo without firing any of it), as well as a general enable/disable—as well as the option to map hotkeys for all of these functions. Having such control in CW made re-prioritization of energy flow a snap.
I'm fairly sure that this is "in the works". However, the UI is already slightly cramped due to the need to allow for a ship with every module type present. So we might be waiting a while.