Would it be possible to set it up so when I'm looking at the friendslist it shows a little icon when friends are in jail, or in the hospital?
It's possible. Rather than icons though, perhaps a revamp of the lists. Anymore info on there and it might get a little too crowded.
well the icon could just be a different color icon that looks like the donor icon.. red for hospitalized, blue for jail.
or even just a little circle or something.