Automatic down quality in inserter.

[meifray]

If a inserter found grab a legendary fish into a chest that every slot have a normal fish,
it down quality it and insertet a normal fish instead.
Or a inserter grab a rare iron gear wheel and insert into normal engine unit assembler

maybe also have a option in inserter to disable this feature.

why? because this can make quality product not clog the factory be default, quality should only matter when player actively try to get it, and when they actively try to get it, that downquality will not happen at all (because they either disable down quality in inserter, or they put them on belt where they have every opportunity to sort it out.

[Loren Pechtel]

No! That would force you to carefully filter everything when you otherwise do not need to.

[Hurkyl]

quality should only matter when player actively try to get it, and when they actively try to get it, that downquality will not happen at all (because they either disable down quality in inserter, or they put them on belt where they have every opportunity to sort it out.

Higher quality items don't even exist if the player doesn't take positive action to make them exist.

[crimsonarmy]

There are other suggestions that address this already. To summarize:
Quality is an optional mechanic. If you want the bonuses from quality you need to deal with both things being too high and too low quality.

[computeraddict]

The way I deal with this in midgame or before Fulgora is overproduction with half being quality and the other being normal. The normal output prioritizes drawing normal items from quality production, so if quality items aren't being used it fails over to using the normal-only production line.