BRU was with 6 controllers IIRC whren I left, cutting it to four is a move backwards but I see the hours have changed, also has the M disappeared before the night?
The idea of night sector licencing was mooted some years ago but was then decided to only be do-able after periodic competency checks in the Sim were introduced. Traffic was then such that it would only be possible for a couple of hours each night so there would be little or no benefit.