Just some random points on Kryptonite... as far back as 2-years ago, Snyder saying that just because Kryptonite (and Ice Breath) wasn't in
MOS didn't mean they couldn't appear in the future.
Ice Breath & Kryptonite
https://youtu.be/ZE54Jrjcj8I?t=1m45s
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Especially with various rumors and fanfics running around, it's interesting that of all the configurations of Kryptonite Umberto Gonzalez could allege, the one he mentions is in a pre-existing 2-year-old interview.
Kryptonite Spear
https://youtu.be/ExT5rqFqef0?t=3m50s
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We've had rumors of Kryptonite-laced armor going back to October 2014... and interesting to note that while EW mentions Kryptonite in connection with the suit
online, their
print edition never mentions it.
http://batman-news.com/2014/10/27/e...flecks-batman-batman-v-superman-dawn-justice/
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Overall, Kryptonite is just such a large part of the mythos it'd be hard to keep sidestepping it... and it's a solution the public is willing to accept without much challenge, which, maybe, this Superman needs more of since some considered MOS
too challenging. Three upsides to Kryptonite:
1. Whatever time is spent explaining it is now a sunk cost in the cinematic universe, that never has to be revisited, and frees up time for Metallo or whomever else ends up relying on it in the future.
2. Gives Superman a chance to overtime this weakness to show it's a vulnerability but not a "win button". That can honor both Superman and Batman... Superman, because he can
still put up a fight, even with Kryptonite on the table, and Batman because he still
has to fight, even with Kryptonite on the table.
3. Superman entrusts the Kryptonite to Batman. I'll be severely disappointed if there isn't some variation of this in the film, but I totally expect this iconic moment and all that it means.