If Ves wanted to design a truly effective growth-oriented training mech, then he had to bestow it with an additional advantage.
The benefits he had in mind were the same as the ones he envisioned for his spirit fruits.
For example, piloting his training mech could slowly activate and draw out a mech cadet's spiritual potential. Piloting his training mech could also increase a mech cadet's talent in a specific fighting skill.
These were benefits that were unique and incomparable to any other product on the market! No other mech designer should be able to impart their mech designs with these fantastic features or else the mech market would have already been dominated by these innovations!
The difficulty of implementing them was much higher as a consequence. Ves had no idea where to begin and he might need to spend a lot more time in order to develop the essential mechanisms.