So i tried this mod.
And it is alittle broken (havent left nauvis yet on this save file).
First of download:https://mods.factorio.com/mod/QualityAssurance?from=search
This mod unlocks all quality from beginning, or you will brick your factory when you reach first stage of quality.
Before you unlock quality games play as normal. As soon as you research quality (up to rare first). Everything will try start making rare items.
This means even ore. So you will end up deadlocked everywere if you dont purge everything on belts and change reciepe to rare materials.
And it will happen again when you unlock epic and legendary quality.
second problem was trigger research. Like mine uranium. Game needs normal uranium to trigger this research and you get only legendary.
I used a console command to get around this. This will happen with more trigger research.
Third problem is launching rockets. Rockets will not accept (or im doing something wrong) legendary quality materials to build a rocket.
And everything you craft/mine is legendary.
This mod: https://mods.factorio.com/mod/Dequalitier?from=search
I could build this using my old base (the one deadlocked since i just abandon it). So i could build this box in normal quality. Dont think you cant build this if you have all quality unlocked. That brings me to fourth problem.
fourth problem.
You cant hand craft anything. Or mine somethings by hand to get "normal" quality. This is needed. Or get an option to craft at any quality you want/need.
5th problem:
To use any blueprints, you will need to get familiar with upgrade planner.
Problem no.6:
If you build a space platform or spaceship using a blueprint. You cant use upgrade tool to upgrade spaceplatform to legendary (or i couldnt figure it out).
So i had to dequalify space platforms using the mod in 3rd problem.
If you using starter kit for space platforms with legendary quality it will brick blueprints using circuits (green and red wires to communicate).
I just used the mod from 3rd problem to dequalify starter kits and it worked. But beware allmost all spaceships/platforms will use "normal" or green quality on things. So you will have to setup spaceships and platforms so they work with legendary quality stuff.
This is the problems so far i have stumbled on. Tonight i will leave for vulcanous. And lets see what problem we can find there :)
Love the mod tho! Some touch ups and it will be a solid mod!
Sorry for the bad english. English isnt my first language.