Part and Power Cells Conversion(Single Player Supply)

I am running out of uncommon parts and it got me thinking.... What if we can convert parts? What I mean is that we can convert our low rarity parts into a higher rarity. For example If I had 20k common parts I can convert a certain amount of parts (10k) into uncommon parts. This means that if I want to convert 10k common parts I will get 5k uncommon parts in return. I hope we can skip several rarities. By that I mean that we can trade uncommon parts to epic parts. For example if we have 5k uncommon parts it would give us 750 epic parts in return (you can lower the parts recieved by the player). This will also stop from abusig the feature as well. If we made 10k common parts into 10k uncommons then you can have up to 10k legendary parts :/ which would make the game so easy to the point it's boring. This feature can also be applied to power cells. This example is to convert 5 common power cells to 1 uncommon power cell and so on.