The idea is to have some kind of search portal, or a powerup rem that collects cards that you consistently fail, so that you could easily overview them and see if you can add mnemonics / split / join / edit / remove them.
Like right now I don’t have enough time to finish my queue, and I know quite a lot of these cards have been there for a while. If I could quickly and easily identify these cards, then I would be able to decide if maybe some of them are redundant or if I need to create mnemonics.
I believe that the most flexible implementation of this feature would be to add search parameters that find cards by review score.
Another way to implement it would be to create a list of all cards that can be sorted by review parameters.