Gatters is a great airport to fly from - at least the BA North Terminal anyway. I've had the pleasure of flying a number of different routes over the past years and looking at my travel pattern since 2008 it is quite varied.

only the Gatwick routes I travelled are shown here:

January-08 LGW-INN
February-08 ZRH-LGW
February-08 LGW-TRN
April-08 LGW-DUB
April-08 DUB-LGW
June-08 LGW-DRS
July-08 DRS-LGW
July-08 LGW-WAW
July-08 KRK-LGW
July-08 LGW-GVA
September-08 LGW-PSA
September-08 FCO-LGW
September-08 LGW-AMS
September-08 AMS-LGW
14
May-09 MAD-LGW
May-09 LGW-FCO
May-09 FCO-LGW
May-09 LGW-AMS
June-09 AMS-LGW
August-09 LGW-VCE
August-09 BLQ-LGW
September-09 LGW-GIB
October-09 GIB-LGW
9
May-10 LGW-GOA
August-10 LGW-GLA
September-10 EDI-LGW
3
January-11 LGW-AMS
June-11 LGW-JER
June-11 JER-LGW
July-11 LGW-GLA
August-11 LGW-JER
August-11 JER-LGW
6

Spot the defunct routes among the ones still going.

I do hope BA will bring back some of the long forgotten ones. INN & GVA make a comeback for the winter schedule so I'll be using those again but it would be nice to go to Dresden and Krakow with BA. Hint hint.

BA do have plans to make the Gatwick 'experience' a premium one through various bits of investment so I don't think single class is on the table. It may well have been a few years ago but then who knows what might happen with the economy.