But the director should have at least given an audition to Adam Schiff.

Genuine and sincere. Both qualities I'd note for both men.

and as much as I like Tom Hanks and recognize that he's a gifted actor, I really wish they'd have found some complete unknown who could truly be Fred Rogers.

All I see is Tom Hanks.

watched a lot of Tom Hanks, maybe this movie wont work well for you. On the other hand you may feel different about it one day.

This is a problem that most recognizable actors have. After a while you just see the actor, not the role or the character they are supposed to be playing. Which is why character actors can be so wonderful. Most of the time you don't remember them from one film to another, so they are often highly believable in the role they're playing.