I did like they mentioned Lex was president,which does fit with the last episode of the series.
I have a feeling if Rosenbaum had agreed to show up,instead of seeing the newspaper articles on the wall before we panned out to Clark we would have seen a television Screen with President Lex giving a speech ,which would have been a disappointment because I doubt they would have had he and Cryer's Lex interact, which is what I was hoping for.