What features would you like to see?

Hi! This site is fantastic!! I really love that we can choose in each review/learning session how many words will be presented to us and how they will be tested in particular.

If you do need ideas (1 & 4 are most important to me but maybe the others are of interest)…

1. The option of missing multiple choice and typing questions, of doing it in both directions (word-->definition and definition-->word), and of deciding if with both multiple choice and typing whether only multiple choice or only typing has both directions (not sure if that last one is clear!). I really liked that in memrise's learn feature first had you see the word, then select its definition in multiple choice, then select the word in multiple choice, and then type 4x (or something like that). I felt that was really useful for learning bit by bit--to me things like Anki don't work because I can't remember a word right away, I need to see it a few times first. If there could be some kind of advanced setting where learners can adjust this to our needs that would be even better than memrise!
2. Some kind of indicator of progress during learn/review sessions. It's helpful to know whether I've done less than, about, or more than half of the session, for example, and keeps me motivated to continue (another thing I miss in Anki)
3. Some kind of indicator of progress on the course itself: same reason
4. In memrise, when there were special characters in responses, it would list all special characters used in the course below the typing prompt in review and learn. This was really helpful because it wasn't necessary to learn a whole new keyboard layout or constantly copy/paste. If automatic detection is too complicated right now, maybe a button that provides all the special characters listed in Microsoft word (+/or possibility for users to contribute site-wide to reduce work for you?)
5. Least important for me: indicator of progress on a particular word shown during learning session (memrise had the growing flower thing, but even just a bar showing progress is great!).
6. Could be interesting later on: the possibility of categorizing words by progress made, in terms of how well you know it/review times (ie: last assigned to be reviewed within 7 days of when you learned/reviewed it; last assigned to be reviewed within 8-30 days of when you reviewed it; last assigned to be reviewed within 30-365 days of when you reviewed it; last assigned to be reviewed after 366 days of when you reviewed it). Perhaps just symbols to quickly see where you are in a word, or maybe even possibility to divide full list of words by progress on the word. Categories could be something like recent, decent, solid and expert, or if you want to go with with the village theme it could be sticks, bricks, house and mansion or something
7. Similar to 6: the possibility to see the list of words in a course that are causing the most difficulty, ie if you've responsed incorrectly more than 30% of the time (maybe even make this number adjustable in an advanced setting for each user?), and maybe even to review specifically that list of words?