IMHO the most realistic option for the runway would be to build a new 02-20 slightly east of its currently location. Because the current one is in the wrong place for any extension. Directly north takes you to the railway station (not just the shunting yard0 and south you have the M27, but also the Ford transit factory, currently preventing an ils on this side.
So you move it all east a bit, buy up the Alstom yard and pirelli factory, all due to close in '06, have a slightly longer 02-20, just add a bit to the north. To allow safely 738, with ils both ends. Have the second terminal where pirelli is so your only building on brown field and the old 02-20 will give you a cheap almost full length taxi. Dig up the old taxiways and you parking problems for the larger stuff are sorted west side, without effecting the ils.
buy the way all the above is copyright by me and can now only be implemeted by paying me a large royalty
