Given the US imprisons its citizens at nearly ten times the rate that Germany does, has hugely unpredictable outcomes to civil suits, and clearly has serious problems with reliability of convictions in criminal cases, the question shouldn't be whether the US should have radical changes to its legal system, but how to achieve it.

Germans also tend to be more stable and commit less crimes than the USA, the crime rate here is also very high compared to Germany, including white collar crime. However, yeah our industrial prison complex system is extremely backward and should concentrate much more on rehabilitation and making sure that it's a (relatively) safe environment with things like 100% camera coverage since prison violence and rape are such a common thing.