The naive idea is to per schematic add a field which can have one of these vales
- HQ --- the quality of the item always matters
- LQ --- the quality of the item never matters
- Mixed --- the quality of the item matters for some items, but not at all for others
Another idea is to have 1 and 2, but for 3 it would rather be a list of schematics that require HQ of the current sub-components. For each schematic such a list contains schematics that calls for HQ.
Are there even other ideas and feedback? You are welcome with any feedback or correction

Greetings Zimoon