No, your idea is a good one. What a great way for strangers to become friends.
Just go to Compass Rose early (maybe at lunch on the day) & tell them what you need. They will work with you. You may end up with a couple of tables next to each other, but mix & match the people!
One day, I'll tell you the story of how I booked a table for over 20 on the PG.
Have a great trip!!!
Doug