The vent port for easy re-access after opening and closing the ULT should be at eye-level and not hidden somewhere else. Besides, an automatic function of the vent port simplifies the process.
The display should be at eye level for easy reading of all settings. The display should neither be above the outer door nor below the outer door: Reading the display while being on your tiptoes or kneeing on the floor is not comfortable.
Especially when having a touch-display, this display should have an easy-to-handle interface. The content and structure should be self-explaining without the need to read the operating manual at every step.