Now that I've rediscovered it, the advanced searched has helped me quite a bit. I've found that there's filter option for words without kanji and words without example sentences. But the option for terms without audio still doesn't exist. Could you please add that ?
Additionally, I'm a bit confused about user made terms. I know that I have created some over the years and in quizzes they have the red U symbol as an indicator. In the advanced search for those terms there's no red U, and some of the terms are in the dictionary in exactly the same form and translation, and yet, they don't appear in the same schedules for me. Or I seem to have studied a user made term all those years and completely ignored the actual dictionary term. 1) I would like to have that marker (red U) even in the advanced search for better clarity. 2) Is there a way to get existing terms merged with the corresponding (seemingly accidentally) user made terms, so I don't lose my study progress?
And one more thing I noticed, the tool seems to be bugging. After getting my search results, I'm shown there are e.g. 2 pages and I'm on page 1. When I move to page 2 (either with the arrow or the drop down menu) I suddenly have 3 pages and some (or all?) of the terms appear twice.
There will not be a way to merge terms in that way, as there is no real linking behind the scenes with those terms, and to be honest, I feel overly hesitant to adding one-way only merge features that I could see causing problems.
I won't be able to add any new features for awhile, but everything you've noted sounds quite reasonable.
As to the third, I'd want to see a full screenshot of all the options you've chosen so I can see what is going on.
I choose one of my schedules (e.g. beginner vocab (the renshuu pre-made one)) -> I'm on page 1 of 30 -> I move to page 2 -> I'm on page 2 of 31. The repetition issue appears on the last page.