They appear to be keeping a similar schedule for the night services in the revised 'stopping' timetable, with only 1 minute at the Airport and 2 at Friar Lane. Presumably they only want to use one bus, and this is the only way it's possible.
One of the main reasons for the switch to low-floor vehicles is that in order to pick up at Friar Lane and the station, they have to use low-floor vehicles under the terms of the Nottingham Statutory Quality Partnership (SQPS). Broadmarsh wasn't included in this, which is how they were able to use the coaches initially. It does seem a retrograde step, IMO - especially as those Enviro200s have the awful plastic Urban90 seats installed.