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What if Constantine established Nicomedia in Asia Minor as his capital?

A couple years ago somebody proposed a plausible way it could happen, but didn't get much response:

https://www.alternatehistory.com/discussion/showthread.php?t=238930&highlight=nicomedia

Constantine founds Constantinople at Nicomedia, not Byzantium

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Constantine chose to found his new capital at Byzantium because it was relatively near the place he defeated Licinius. However, according to the book I'm reading it wasn't a good place to found a large-scale city due to water supply problems.

So, what does he do? He takes advantage that Licinius and the other Tetrarchs had built up Nicomedia to some extent. He decides to appropriate the other Tetrarchs' work as his own (similar to what he did in Rome for Maxentius) and turn Nicomedia into Constantinople. In addition to using an existing city, he can flaunt the fact that he had overthrown the city's previous masters.

Constantine installs all of the monuments and buildings he put in Byzantium and soon Nicomedia grows by leaps and bounds to the sizes Byzantium achieved IOTL at the same time. How does history develop from there?

Would “Nicomedine”, rather than “Byzantine” be a modern word to describe devious and complex politics?

How else is the ERE changed?

Most importantly, is the ERE’s longevity affected? (related poll attached)

Poll:

A Nicomedia based ERE would not have survived, these invasions, if they occurred:

A) The 5th century Volkswanderung
B) The Persian and Avar (or other northern) Wars
C) Arab invasions
D) 11th-12th century Turkic invasions
E) Medieval West European invasions
F) Mongol invasions
G) Timurid – or Timurid-like invasions
H) Anatolian Turkish invasions in the 14th century or later
I) No reason the Nicomedine empire wouldn’t survive as long as OTL’s Byzantine

There's an implicit 10th option "how do we know if any of this would happen, I can't speak intelligently about the odds"---but, even if true, it's basically tantamount to decision not to play.
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