The context sentences are probably the weakest part of WaniKani.
The sentences provided vary greatly in difficulty, some vocabulary words have several sentences and some only have one.
Most vocabulary entries have sentences disproportionately difficult compared to the vocabulary level.
I often have to rely on the sentence examples on Jisho (provided by tatoeba). The sentences vary in difficulty and don’t always cover natural speech.
The existing context sentences should be retained, but every vocabulary item should have at least one example sentence that uses simple grammar and vocabulary.
Ideally the words should be used in a context which is relatable to every day life.
Write less, say more.