Your flogging a dead horse mate, the one's your trying to convince are the very people who believe all the ****e the government and tabloids has been saying about the MRA4 being unsafe.
Sadly, this comes from lessons identified folowing the Nimrod AEW3 fiasco. Sadly, the Government of the day listened to GEC-Marconni and continued to plough money into a project that had little chance of success. Even the company noticeboards to staff did not tell the truth.
The only outcome comes from modern project management techniques. If the project comes out of tolerence then you seriously look at cutting losses and binning it. If either available funds or time cannot be met, then the writing is on the wall. It may be harsh, but it stops throwing much good money after bad. If the desired capability can be met elsewhere (and I include from Military Coalition partners) then financial constraints must apply - especially after the last totally imprudent 13 years of financial mismanagement. Bottom line - we cannot afford it because we don't know how much it will cost and we don't know when it will be ready.