What if we could review a whole block of lessons at once
I think it would really help if it was possible to review a whole section of lessons at a time to strengthen words, rather than doing it one lesson at a time, or just practicing the weakest words. Meaning, if I could review in the same way you take a shortcut, it would save a lot of time and would allow me to store things longer in my memory.
Hmmmm... it sounds interesting. We could have some macro areas as well... Like Tenses (there will be other words, but there would be the lessons devoted to verbs), Nouns, Adjectives, Adverbs...
There are several possible classifications... :) Maybe the best ones can be defined in a different way language by language, following the peculiarity of each of them.