Going by the spelling I would guess that Xeququti was named by the space faring Aztecs. So all we need to do is find them and ask them. Shouldn't be too hard.
Then again war might be easier, lets do that then.
As is Diso.
Anyway, we live in a world where people make up their own pronunciation for words that actually exist - in Nottinghamhshire there's a "village" called Gotham - 99% of the world would pronounce it in the same way as Batman's hometown, but natives call it "goat-ham". Go figure.
American pronunciation of Edinburgh and Loughborough bring tears to the eye. Loughborough is my favourite - I actually heard an American pronounce it "Loog-bur-oog". Crazy.
So why can't there be alternative pronunciations of Diso? Maybe there are different dialects across the planet and they all have their own inflection.
I stand by my chosen pronunciation only because it's the same way I've heard official FD bods pronounce. It's only coincidence that it's the same way I've always pronounced it, and if FD had pronounced it differently I'd bow to their superiority.