The E Jet bucket and spade are a no brainer and certain to make a return.
We have become semi-regulars on these from LCY, to Palma in particular, and an observation was made that the crew can often recognise their regulars to Edinburgh or Frankfurt on them as well. There does seem to be much Avios redemption up in Club (which is not really worthwhile on these flights as the whole aircraft is 2+2, there's no lounge at LCY, and a pretty decent catering provision back in Y).
Apart from the weekend shutdown, LCY has notable peaks and troughs itself during the working day which these flights can balance. On Mondays to Thursdays a number make an initial business destination rotation, and then there can be a round trip to The Med before getting in another two rotations to business points before the end of the day. Friday demand is different, the early morning business traffic is well down, but it picks up substantially after lunch, so the holiday flights then are 0700 departures. There's also balancing between the E170 and E190 fleet on different days. Whoever is devising the BACF schedules has a notably sharp understanding of the details of demand.