Something I’ve noticed for a lot of the example sentences for verb vocab words is that the vast majority of them use the “te” form conjugation.
There are two “te” forms, and a “ta” form, which is usually conjugates pretty much identically to the “te” form. This gives no information on how the verb conjugates into the “masu” form.
I know WK is a site for learning vocab, and not grammar, but I still think it would be a lot more useful if there was at least one “te” form and one “masu” form example sentence for each vocab word. With this, in addition to the dictionary form that you are actually tested on, it would be possible to know how the verb conjugates in pretty much every situation.
I also realize that WK tells you things like the verb being a “godan” verb, but unless you’ve already studied Japanese grammar, such a description is pretty meaningless. (I’ve also never seen the term “godan verb” in any of the beginner Japanese grammar resources I’ve used.)
So, yeah. That’s my suggestion. More conjugation forms = better.