Now that I've finished reading it, I'm kinda bummed that they didn't incorporate the high-res gravitational map of the earth. I wanna see some lorentz transforms in the mix :/

>I wanna see some lorentz transforms in the mix :/

it is somewhat present as they said "for spacelike".

There is also another opportunity - by locating your data center on higher floor where gravitation is lower and thus time is flowing faster you'd get your computers work faster compare to the ones on the ground floors.