The volunteer contributors of several language teams in the “Polyglots” team (the WordPress translation contributors) every day spend a lot of time and energy to try and get around some common i18n (internationalization) errors that can be found in plugins and themes from even big development companies.
Many of these errors could easily be avoided if your developers just had a better understanding of the translation processes, and how differences between English and some other languages sometimes even make it impossible to translate your strings correctly.