Update: We’re really pleased to let you know that Agenda version 12 with support for adding tables to your notes is now available to all! Thank you so much for helping us shape this feature and your patience as we built it. 
As @drewmccormack has mentioned a few times above, today’s table features in Agenda 12.0 are just the start. It might not have all the options and power you might have dreamed of, but hope you’ll see it as a solid start. While it’s definitely not our intention to turn Agenda into a full-fledged Excel competitor, there are definitely improvements we would like to make. And as always, we’d love to hear your feedback and suggestions where you think it could be made even better. Enjoy!