Hi all at Korean Class 101!
I am loving the format, as well as all the lessons, which I find extremely useful to learn new patterns. I think your programs would be complete with some exercises about the grammar introduced in every lesson, maybe just a few phrases to translate. I also think that it would be an idea to have grammar flashcards in addition to the vocabulary ones.
Anyway, maybe it could just be a PDF for each season withc grammatical exercises covering what we have done in the 25 lessons.
I hope you'll find my suggestions useful!