I did.

I personally find it missing a lot of features for working with cross-functional team (e.g. developers + designers + marketing).

I'd love to see this implemented:

1. filtering cards based on milestone / labels 2. assigning labels, milestone, labels to note (bcs why the hell should I convert to issue before assigning) 3. multiple repositories 4. automatically group pull requests and related issues 5. automatically move card to "Review" column when PR is sent 6. automatically move card to "Done" when it is closed

I used to manage with waffle.io and love it so far. (I'm not affiliated any way with them, just a happy user)