4 of the 6 might struggle MJS. They've all got water-tight excuses though.
If 1 of those 4 becomes an immortal he won't be there for reasons of mortality.
I voted for Roy Wright for the reasons mentioned by JohnF. Jack Titus would be my next choice. I'm sure Hart, Bourke and maybe even GR will get there eventually. I just think some semblance of a chronological order should influence the choice.
The bummer for inductees when using my criteria is that it means they're dead before they get the chance to be immortal.