I tend to agree. These sentences need to be a bit more focused. It’s nice to have examples that reuse kanji/vocab we’ve seen before, but it is tough to have items that we haven’t learned yet on top of complex grammar. Perhaps a side benefit is that I throw these sentences into Google Translate to get a passive head-start on recognizing unlearned terms.
According to @Leebo, they’re adding more sentences, but they’re doing so from the lower levels up. We’re going to be stuck with a single sentence for vocab for a while.