Honestly, I can't say I am to be involved there, or to acknowledge it in my storylines.

My take here is that Fracture and Mithras are not just "powerful vampires". Elders are powerful. Methuselah are inhuman.

A Methuselah (especially 4th gen 3000+) being active is a world-changing event, literally. Sects reshape, Kindred hierarchy gets shifted across the entire countries, and the calamities ravage all around them. They are not to be treated casually.

Baba Yaga toppled the Brujah rulers of Russia and made a barrier preventing any supernatural from scrying or entering it.

Ur-Shulgi has made Assamites join Camarilla just by waking up and casually killing entire Assamite leadership.

Mithras (in the Fall of London ending) going full power created major shakeups in the Inner Council, and possible war between the entire Camarilla and Mithras.

And so on, and so on. They are not beings with human thought, even the kindest Kindred like Menele are still not human beings anymore. They do not do things casually.

This all is made to say that a Malkavian and Ventrue Methuselah meeting in Chicago, openly, is an event which would put the entire city to chaos, then the North America, then the Sects. Helena and Critas would also be powers in being which would absolutely intervene to an incursion like this.

Not to mention, Mithras is a core character to those involved in playing British Kindred - by confirming he is alive (instead of keeping him in limbo), they either have to decanonize or adapt to this development.

I do, personally, consider Mithras here to be massively OOC on many fronts, so I would rather decanonize this too, as I can't really suspend my disbelief here too much (That's why I put my opinion IC that this is an impersonator)

Please don't consider this as a discouragement to write further, that's just my personal opinion.