We use Jira as our product backlog and sprint handling.
We love the integration that occurs with Miro/Jira cards and it allowed us to set up a Kanban board where the client could submit their own ideas without having to add ideas/questions in Jira directly.
Our client often uses screenshots and images to clarify their requirements / questions. Sadly at this point we can't add images within Miro Cards.
On top, having comments inside of cards, or at least the option to segment descriptions based on time-stamps would really be helpful as well. Right now we're just adding a manual timestamp/datestamp to each comment in the description.