I've been thinking about creating a grammar deck based on data from jGram. I've created a sample deck as a proof of concept: https://ankiweb.net/shared/info/3089429258
Let me know what do you think about it. I have to finish polishing this deck, before it can be used.

EDIT:
All the remaining issues have been fixed.

Interesting. Have been meaning to put together something like this for a while, but keep putting it off.

How are you selecting example sentences, etc.?

All data is copied "as it is" from the jGram website. They already prepared the examples.

The way that I imagine using this is: whenever I forget a grammar rule indicated on the front page, I would just look up the page taken from jGram. For example http://jgram.org/pages/viewOne.php?tagE=ga-2

Thought, it is nice to have all grammar rules in Anki to refresh memory from time to time.

EDIT:
All entries are sorted by their JLPT level.

Looks good! You might want to space out the notes part though. Now they just kind of look like big walls of text.