So that’s basically it. I liked about memrise that you could manually add difficult words to the difficult words list without them being automatically removed form the list after revieweing them one time. I still suggest that difficult words shouldn’t be automatically removed from the difficult words list if you add them manually.
You can still see your ‘accuracy’ score when you click on ‘difficult words’, but there is no use seeing that data if you can not respond immediately to it, by practicing the difficult words as many times as you want, to change the score in a short time.
So I would suggest to at least change the use of difficult words back to the way it was before all the changes. I think this can be beneficial for many people who want to memorize words in an efficcient manner.