These were only the basic requirements.
To achieve high-completion visualization, one also needed exceptional imagination, absolute mastery over Origin Matter Structures and inscription studies, and the ability to adapt to changing circumstances rather than rigidly copying a template—lest a single anomaly cause one's own brain to bug out.
Not to mention inscribing an Origin Matter Structure onto oneself. Setting aside the wasted effort, that was equivalent to performing surgery on oneself. It was difficult to see the whole picture and exceedingly easy to make mistakes.
And then there was the most crucial factor: time.
If one truly started crafting an Origin Matter Structure for oneself from the nanoscopic level, then with that amount of effort, one could have killed ten thousand Magic Beasts.
Even if one went fishing, the fish one caught might well add up to enough money to buy a batch of Magic Beast materials.
Most importantly—
Even if there were some superhuman with computational power surpassing a supercomputer, with the imagination and memory to reproduce the structure of an entire city within his mind, nanometer-level precision, and the speed to carry out an enormous number of processes at once—
Oh, and exceptional programming skills, along with at least master-level medical expertise.
Even then, he could only handle the bloodline inheritance of a First Energy Level Magic Beast. Perhaps only a single Magic Beast organ; even Wavebreaker might not be possible.
Every Magic Beast's Origin Matter Structure was different, sometimes wildly so. Even Magic Beasts of the same species could possess vastly altered Origin Matter Structures when living in different environments.
Even the state of one's mood could affect the minute adjustments of an Origin Matter Structure.
Thus, even if it was theoretically feasible, after all these years, the Terra Continent still had the Magic Potion system rather