Kol Hakavod for people who undertake this mission.
There is a however.
People are sick and very promising when they need a kidney.
However, once they have the kidney some go back to their bad habits and feel they can eat whatever they want and end up sick again.
Before one gives part of himself, they should not rely on the info from the coordinator but do homework on their own in regard to the personality of whom they will be giving their kidney or other organ.
If there is secrecy involved, the coordinator should have some form that the recipient will sign as to how he/she will take care of their health.
Unfortunately, i am writing from experience and talking to the recipient is like talking to the wall.