>>23428384
You make a common mistake.
You believe that just being on a planet, automatically dismiss the complexity of a vacuum-rated habitat.

A colony on Mars would require as much maintenance as what you'd need in a space station, if not more because you need to deal with the Martian weather and gravity make it harder to access space resources.
Ground colony in an incompatible biosphere would need to be airtight, pressurized, with a complex life-support system, no allowing any mistake and quadruple redundant systems, requiring fully man-made walls underground because dust from digging isn't good for your health.

Terraforming a planet (even just the atmosphere) is impossible, or rather it requires so much resources that it would only be a vain luxury bringing little you can't obtain in other ways. The only unique resources Mars possess is a 0.3G gravity.

>genetically/cybernetically engineer humans
We could longly debate about the ethics of creating species only be able to live on one specific planet and not be able to interact with other humans.
Just pointing out that extending the range to make gravity irrelevant would let you live in 0G station or 0.1G moon and ignore planet completely.