I think my preferred grammar flashcard format for JLPT purposes is to have the grammar itself on the front, and then meaning/notes/how it connects up/example sentences on the back. I think this works because the memory trigger you get in the exam is just the grammar fragment and you need to be able to remember from that all the details. As long as you're harsh about grading your answers it works out ok (and since there are only a couple of hundred cards tops in a grammar deck it doesn't matter if your recall rate is low, you're still not going to pile up unmanageable review workload). I'm currently working with a 'production' type grammar deck but I'm definitely thinking about switching it out for a recognition format.
