I think you can let all of these issues wait for now. There is not much you can do about your w's relationship with your mutual friend. Just validate her feelings and let her handle it unless she asks you do to something specific. I mean, I wouldn't go out and invite your w and this friend together to dinner anytime soon, but I can't see that there's anything affirmative for you to do in this sitch.
The image of you that your fil has will have to be broached initially by your w if you do R. She is one who told her dad these things and she will have to approach him when the time comes. You can help by doing your part to make your relationship with him as smooth as possible and try to understand where his antagonism is coming from (it sounds like you already do). The only thing I can think of to do right now is to affirm to your w that you would value a good relationship with your fil again someday. That way she doesn't feel that there would be bad feelings on both sides if she decides to R with you.
As for the house, maybe you could get some information from a real estate agent as to its market value, lease value, etc. and present it to w if she asks about it again. That way, she knows that you took her concerns seriously. I wouldn't jump the gun and put the house on the market right away or anything. But just do some research in the meantime so you can respond to her when she raises the issue again.
All good stuff!
Mimi
M:37; H:37; M:10 years;T:13 years;no kids. Bomb ("I love you, but don't feel things for you I should":1/08/12 Separated (H living with various friends:1/18/12 Separated (H rented his own apartment:3/4/12