I think in regards to Jon spending time in the future essentially being the face of the House of El and legacy of Superman, I'm most interested in how the general public of the 32nd century will react to him. Do they take him as a tasteless fraud because they don't think he's the real deal, or do they go similar to Post-Crisis Valor where he's something of a cross between a celebrity and straight up religious figure.
Based on how during the flashback Bendis stressed the idea that around the galaxy Superman and his House of El is regarded as royalty. I may very well get my Space Prince yet