I must admit that I have some trouble maintaining two languages (DE and EN) in parallel on my site – it’s not very complex, but my workflow is definitely sub-par: I edit things in one language, try to remember them all, and then I edit the same things in the other. Not good, especially for small details!
Taking a walk today, I had an idea: Would it be possible to setup the panel in a way to have two languages (with all their fields) displayed next to each other?
(Here comes my idea, photoshopped.)
All the best, and keep it up!