When both family and medical experts agree I'm not seeing what further needs to be covered. I think the implied cahoots between both parties to be very unlikely.
I'm not sure EDDIE. There are 'cut & dried' cases of course, but others may come under the aegis of a family wanting to be rid of a burden (and possibly inherit at a useful time for them). I honestly think that a third party, such as an impartial judge who is aware of all the factors is really a necessity in these terribly sad cases.