I don't think any feelings would have changed for Snape, just because he hated James and he hated Harry because he was James' son. However, I can imagine Harry's feelings toward Snape changing a bit. I really just can't imagine how the scene would have been had Snape been living when Harry looked at his memory. I just find it so sweet that the last thing Snape saw before he died was Lily's eyes.
Also, like Seeker said, even if Snape had been living when Harry visited his memory, I can't see the conversation turning to the Elder Wand at all. Mostly because of Harry's mistrust of Snape.