Well, using Milestone build is all up to you. I probably won't use it in production unless I test out all functionalities that I need to use and verify that all is working without any problem. That said, it's the same with GA releases too. I'm stripping all unnecessary functionalities out and fixing bugs to make it stable. From my experience, I won't go for the first version release but wait until the second. That is, I'll probably wait for the 6.2.1.
FYI, translation can be easily fixed by making Language_en-ext.properties file in WEB-INF\classes\content\ directory with fixed up translation.
Por favor, identifíquese para poder marcar esto como inapropiado