I think everyone is getting carried away with the thought of a full length taxiway but as already stated it's not entirely needed at present although desirable but what has been mentioned numerous times and steweyb points out that a strip of tarmac from stand 14 to the runway would be sufficient and could well be installed at the same time as the runway is resurfaced.
At least the backtracking would be shorter than it currently is without the cost of a full taxiway.
I always thought it was strange that this wasn't incorporated into the original redevelopment in 1991 when the apron in that area was built.