Just to make sure I understand you correctly, you just want to make a mod that includes a German translation for all the entities, items, and config options? And then if I add something like a new setting or machine, you would update your translation?
I mean yeah sure, go ahead. Don't know how popular such a thing would be, but go ahead. I mean, even if I wanted to stop you, I couldn't really, since the original author of this mod was so generous with his license.
But yes, you have my blessing.