More options to select or refine vocab shuffle

[BigPeteB]

The vocab shuffle is a nice feature that's really helping me improve my recognition and recall in both directions, except for one problem: there are a lot of very common words that use really simple kanji, and they come up so frequently that you don't get difficult words very often.

I can think of two features that would make the vocab shuffle much more useful IMO:

1. An option to "banish" (or "memorize") a word. Pressing this button would mark that you've completely memorized this word and don't want to see it again (or possibly don't want to see it for a chosen period of time, like 1 month or 3 months). Liberal application of that button would let users get rid of basic vocab like all of the numbers, days of the month, months of the year, simple words like "book" and "tree", etc., so they can focus on more challenging vocab.
2. More options to select which kanji to choose vocab for. The only choice right now is "1 to N", where N is either "a number the user chooses" or "all of the user's learned kanji". Having similar options to the "Kanji Review" page would be nice, so you can choose "M to N" to exclude lower-numbered kanji, or choose an RTK lesson. (For vocab shuffle, it might be nice to be able to select more than one RTK lesson to include, without having to look up the starting and ending kanji numbers for the lessons you want.) Using these options, the vocab chosen would be vocab that only use any kanji you've learned, but each vocab word must include a kanji from the set you specified (i.e. the range or RTK lesson). To rephrase in case that's not clear, "select from vocab where (every vocab.kanji in user's learned kanji) AND exists (vocab.kanji in requested set of kanji)".