Could a common script help enhance readability?
Since the primary motive of this extension is to increase the reader's vocabulary in a certain language, wouldn't it be better if the language the user is trying to learn could be presented in the same script as the base language? A common script can help enhance the readability since switching back and forth between two scripts can be stressing on a psychological level. Readability may not drastically suffer if the scripts have a high degree of similarity such as between English, French and German but it can be severely affected if scripts aren't even remotely related such as those of English, Arabic, Chinese or Hindi.