Xenoverse, simple!

Did anyone say X-U yet?

I hate the Xeno- prefix, I think it damages the mass appeal of these titles Xenoblade should have been just called Monado, as originally intended.

But since they are apparently going to run with the Xeno- theme (Xeno meaning Alien), I'll assume from the trailers that X involves some sort of alien monster attack or threat and say the title should be:

Xenostory.

You are taking the term "alien" the wrong way. Alien (and Xeno for that matter) just means foreign, not extraterrestial beings.

I have several working hacks. If someone is willing to write a PM.

xbayonettamightbefornintendowhatffversusxiiiwasforsony

No, I am fully aware with what alien (and Xeno-) means.  You took it the wrong way by assuming I meant extra-teresstrials.  I never said that.  I was referring to the floating monster things that appear to be attacking the humans in the trailer.  You could paraphrase what I wrote as "foreign monster attack".  I suspect from the trailer that the city has some sort of power that keeps the monsters away, but as it declines from 100% to 0% the monsters can then attack.  The people live in fear and the hero must at first find special stuff to recharge the defense, but later go on a globe-trotting quest to find and stop the source of all these problems.  I suspect a good amount of religious and philosophical revelations along the way.  On that note we could call it:

Xenoquest.

Xenoblade: The Quest For Console Sales

x² + y² = r²

what bout xenoblade legends or xenoblade legacy