Some people got mad at the idea that Clark would have sex with/marry other women after Lois passes away which is insane. Neither Lois nor Clark are virgins by the time they get together, why on Earth would people expect Clark to give up sex forever after his wife passed? Maybe I just have a different perspective since members of my family have outlived their spouses and remarried, but I see no reason to deny Clark that choice. If he's going to be living for another couple millennium, still having the body of 30 year old Olympian no less, you better believe he's going to be having sex. Besides the Moses parallels PKJ has been acknowledging, this gives Superman some Abraham in that his descendants "outnumber the stars in the sky", and they become a nation unto themselves. I love that concept and enthusiastically endorse it. Plus they're just awesome, you've got Viking inspired members, Els who are royals, Els who are Lanterns, Els who are simple farmers/civilians, you've got Kara as this grand matriarch of the entire family, Warworld as their "Fortress of Solitude" base, all that is exciting! PKJ keeps teasing/saying that he wants to do more with them and that he think he will get to, I'm praying he's right because they're simply too intriguing a concept to leave on the shelf.
Only thing I'd add is establishing members of other races/ethnicities beyond just the black and white descendants we've seen. How about some Asian Els who descend from offspring of Kal and Kenan that married and added to the line? Or "brown"-coded members, whether that be Latin or Indian or Native American? We don't need them all to be stars but I would like to establish that other groups are represented within the El family, and the House of El is great way to add representation in a way that doesn't add more members than the current day Superfamily can support. More alien hybrids would be cool too, the Tamarian/Kryptonian/human hybrid Theand'r is neat, I'd love to see more in the same vein.