Back in 2009 James Robinson did a typically out of the box surprising plot line, “Superman: New Krypton”, involving 100,000 Kryptonians from Kandor being saved from Brainiac and restored on a new planet exactly opposite of Earth circling the Sun. This is followed by a beautiful 12 issues series “World of New Krypton”, where Superman commits to living among his people instead of Earth . So, imagine a world of 100,000 super-powered beings, any of which, infant to adult, on a bad hair day could just come and wipe out a continent over here on Earth!
In the past year the Supergirl series on CW has started to lean into that idea by having a surviving Kryptonian city take over a planet shall we say flying distance from Earth.
While I continue to greatly love the new 52 explosion as well as Rebirth, one of the sad things about Flashpoint and New 52 is that great storylines like this were lost from the current time stream.