I'm extremely tired and have little time, but...
What a sweet ending! Awwww!!!!
I loved that Clark and Lois had a daughter and named her after Ellen. (All right, they named her after Lara and Lucy too, but...) I loved that Clark showed Ellen in the other universe a picture of little Ellie. I loved that Sam saw that other Ellen, and could tell her that he still missed and loved 'his' Ellen.
I loved how sweet little Christopher was when Clark and Lois met him again. I loved that he knew that those other Lois and Clark were not his parents, and I loved that he was able to pretend that he thought they were. What a good and wise little boy he is.
I have a problem with the fact that all Kryptonians are telepathic, but only with each other. In the comics, the Kryptonians were not obviously telepathic, although Clark and Lois could contact each other occasionally. To me, this was a wonderful testament to their great affinity and 'soulmateship', so I loved it. In your fic, however, Clark can communicate with all the Vans in all possible timelines and universes, and he will undoubtedly be able to communicate telepathically with his children, too. But, apparently, he will never be able to communicate telepathically with Lois.
Ann