I know this is an Old post but we had a similar complaint with maintenance.
They totally messed it up.
Certain LE slats are no/go (3,4,5,6) because they not visible from the cockpit to confirm position should they fail in flight and the load they take on generating lift. LE flaps are no/go. Period. No explanation needed for that.
When one of either slat 1,2,7 or 8 is inop, dispatch is allowed provided maintenance perform a few tasks and the stall warning test passes at flap 0, 1 and 10.
Airspeed limitations are due to cruise maneuvering capabilities. If a failed proximity sensor on the affected slat indication is the cause then the stall speed also rises as the FSEU input to the SMYDs is not accurate due to a slat "not" being in the selected position.
MEL 27-4-1 allows for a failed aft overhead annunciation panel only. Failed is considered not operating in the normal manner as designed.
Hopefully this helps. If not; club me.. Lol
