Will you also be giving feedback on the games in the form of comments? One of the most impactful portions of a jam game is receiving feedback. Due to relatively few submissions, and no community vote, most games only have a few comments, or none at all.
Once you've announced the winners, it would be amazing if the Jurors could go back through at least some of the games they played, and leave their feedback.
PSA: For the ARD game jam in Germany, they used a community vote to determine the top 20. These 20 games were played by a Jury on Twitch, and then there was a live-stream for the winners. In that jam, my game had thousands of plays, compared to <10 for this jam.