Roseweb,
The factors list you quote from Wikipedia is not an exhaustive one, and many of those quoted apply but, to summarise, GB currently operate longer routes (where Easy and Ryanair do not compete) and have a target passenger of somebody who is (or was) willing to pay a little extra to get a full service with a little more comfort than the "squeeze-them-in" charter flights operating those routes. The more "upmarket" travel companies also use them for block-bookings or even whole-aircraft charters for that very reason - the fact that they are scheduled, full service and inclusive luggage is perceived as a differentiator vs the Thomsonfly, TCX and others.
Easy and Ryan depend on a mass market cut-to-the-bare-bones no frills service offering - stack them high and sell them cheap. The aspects of this type of service attract a different sort of customer - willing to put up with no hold baggage (or to pay extra for it), no allocated seat, get there quick, get there cheap - this could be second-homers, businessmen on day or overnight trips, students and migrant workers (not to mention the infamous stag and hen parties) plus "traditional" holiday makers on DIY holidays who are willing to accept the lower level of service for a lower price.
The short route, multi-sector days operated by the typical Easy aircraft and crew is totally different to the longer haul routes operated by GB where an aircraft/crew may only do one or two flights in a day. The turn-round times are significantly longer for GB (1-2 hours) and, on some routes, there are crew stopovers.
Hence my contention that the GB routes and schedules do not fit in to the Easy operating model for several reasons - passenger expectations being only one of them. Therefore, I see three alternative scenarios - one is that Easy are sticking their toes in to a whole new market where the GB service offering will remain relatively unchanged and the fleet will be used as a starting point for building a "medium haul" service offering. Any cost savings will be by way of consolidation of ground crew and support functions. Second scenario is that Easy will keep the routes/aircraft but attempt to use their own service offering on them - fine in the longer term but bad for those who have already booked and paid for the GB service on flights post-March 2008. Thirdly, it could be that all Easy want is the slots at LGW and the routes will be dropped, the aircraft returned (they are currently leased) and Easy will continue in their existing market.
Personally, I hope that the first scenario is the intention as I believe that there is a market for medium haul routes that compete favourably with the charter operators as regards comfort and service - I would rather (and often have) chosen to fly GB rather than FC, TCX, TOM etc. and pay a little extra to do so.
I must confess a little self interest as I love Gibraltar (it is a love it or hate it sort of place!), the wife and I married there nearly 9 years ago and I fondly remember GB Air Vickers Viscounts operating to LHR many moons ago - it is a shame that a little piece of Gibralta's history is fading away :-(
Cheers,
Jet