I love ghost reviews, and want to leave them on to get the extra practice. However, it’s discouraging that at my current skill level, they seem to be ever-increasing. I dislike it when I see new non-ghost reviews in the queue, because I know they’re just a chance for me to fail and thus increase my total ghost count.
I had an idea that I think would make this a lot better: don’t try to to introduce new sentences for a given grammar point if I have more than, say, 3 ghosts on that grammar point. That would give me something to work toward: if I kill a ghost, I can look forward to being introduced the a new sentence for the grammar point, and possibly increasing its SRS level.
Unlike the “minimal ghosts” option, this continues to quiz me on every sentence I get wrong, and encourages me to drill until I understand it and get it right consistently. But, it avoids ghost overload. What do you think?