Again, I think the point is that Mon-El (the guy with "El" in his name who has Superman's exact powers) 1000000% *is* the obvious choice, thus making an alternative choice --even while Mon-El is there and able-bodied-- all the more effective. It says that you don't need to have the name "El", the exact look, or the exact powers to still be the guy.
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In terms of streamlining specifically, I was talking more about how rather than meeting Clark for a day or two, having memory loss, and then being a resident of the Phantom Zone for 1000 years, Mon-El seems to far more simply and effectively be a decedent of Jon's. And in the case of Ultraboy you'd have a 31st century Superman/Superboy pastiche with no familial or genetic ties to Superman/Superboy eventually outright function as the 31st century Superman rather than continuing to just happen to share some what similar powers and very, very a similar name.
Sure, but he already *is* Superman, so there is no journey with the Legion to get to that. Plus, he'd be another hero who is tethered to the past rather than the actual native Superman of the 31st century, which is the point of my whole theory.I think Kenan would probably stand out more in that vein
In my mind both is possible if not likely. Going into how would be long winded. Long story short: I view the possibility of an adaptation of Legion (live action film or otherwise) as the likely incubator/rehab for the Superman IP as well as a launchpad for their IP in greater media. So, theoretically, our new Superman would return to his time, and the Legion would still be left with a Superman on the team (along with a variation of the Miles "anyone can wear the mask" effect).especially if a media adaption is more likely to emphasize a Superfamily member from the past joining the team...otherwise they won't need to have to have a Superman on there to begin with in my opinion.