It would be very useful if the modeler would give a reminder when you edit text and labels on screen that you should not forget to do the same for other languages that you set as well! Many times I commit (and even deploy sometimes) and only later find out that text is missing in other languages.
Obviously the option should be there to disable this reminder since not everyone probably would like to get these reminders.
Mendix has these set in the warnings of the Errors panel. It reminds you of the empty title, caption, enumeration value, etc. See screenshot. I know it is a pain when you have a lot of warnings but it might be good to solve them for the modules you custom made.