instead of a triangular service operating in different directions each other week day, it is now a W service operating daily
Absolutely. Made possible by the arrival of the E195 in June which will take over on many (four of the six GCI-LGW-GCI rotations IIRC, though I might be wrong) of the Gatwicks, thus freeing up an ATR for much of the day unless there are m/x issues - in which case an STN-GCI/JER flight can be combined; so although retriagulating isn't ideal it's win-win in terms of increasing utilisation etc.