Commute is definitely.. awkward at times. You'd think "Direct Adjacency" would carry a commute bonus rather than make it worse.
It's also a little odd how "Multiple" Tubes over a long distance can reduce high commute complaints over a single line. They're still walking a longer distance. Either people of the future are hooked on glass tubes, or the use of mood enhancers has dulled their brains :/
It would make more sense to me if they did go about making use of other transport methods. Would significantly help with keeping colonies relatively "TIdy" rather than sprawling over the landscape in chaos, you'd have sections of colony spread out to where they need to be (Mines, Farms etc). Actual zones, rather than a mass sprawl. I.e. AgriZone, Industrial Zone, Residential Zone. Something more akin to urban planning and city management.