LGW times
18.00-19.25-19.55-21.15 x6
10.05-11.30-12.05-13.30 6
Going to add an extra 1-1.5 hours per day Mon-Fri but last summer it was open until around 7 most days so not a lot really.
First flights arrive around 08.40 most days earlier and the last departure is around 18.00 excluding the above however on Sunday there is also a 20.50 to BHX.
Cost may balance out as there is much less of a peak period at lunchtime so in theory staff should be restored differently so it should have minimal cost as less would be required together.
Can see the EI flight been a hit on Fir/Sun/Mon with passengers.