Sonar 0.5 is almost here, bringing a complete ticketing system to Sonar, along with many other improvements and changes. There's a video series available in our Sonar Casts section that will take you through the features of the ticketing system - check it out, and let us know your thoughts on the forum.
We're already hard at work on Sonar 0.6, which will bring a completely customizable customer portal, usage based billing options, and many more features and improvements. If you didn't see our roadmap to 1.0, check it out - this will give you some insight into when the next features are coming.
We're excited to your feedback on our ticketing system! Keep your eyes open for 0.5, it'll be here very soon.