Big difference
The Needhams are welcome on Kos
It seems the McCanns are hated in the algarve
The McCanns thought the professionals would do a better job
The McCanns have managed to get the Met involved
That's quite an achievement
I don't think any searching the McCanns could do would make any difference
The whole Algarve hates the McCanns? Quite an achievement.
They thought the professionals would do a better job? Only one professional body was on the case, the PJ. After that there were various PI's with no professional qualifications or history in finding missing people as far as I know.
David Cameron and Theresa May got the Met involved on the McCann's behalf, and Theresa May didn't seem keen.
Rebekah Brooks hit on a way to 'persuade' Cameron, allegedly.
It seems the McCanns agree with you - no searching they could do would make a difference. Perhaps you should point out to Kerry Needham that her searching is unlikely to make a difference either. Somehow I don't think she would take any notice. Judging by her track record she will search, by herself if she has to, to her dying day.