Eddie Muller answered my question about The Come On! At 55:49 here:

https://m.youtube.com/watch?v=ZPRvx7CrR-g

He says it is a good question - hey, I’m as susceptible to flattery as the next person - and that the Film Noir Foundation should look into the possibility of restoring the film. You can see his wheels spinning. So maybe something good will come of it, but in any case, I’m very pleased.