TCAS FAN
Surely the simple answer would be to build a taxiway linking stand 14 out to the runway that would alleviate the need for backtracking from the middle point of 02/20. This I don't see as interfering with houses on Southampton Rd at the northern end of the airfield and would not be cost prohibitive.
I'm probably barking up the wrong tree but this plus my suggestion of reducing the number of stands at 1-5 to accommodate larger aircraft would not attract huge financial outlays and might just start to sow the seed of thought in new airlines minds!!