Edit: Sorry, I've just realized that I haven't really contributed a lot to this on HN. Specifically - how does the ticketing system work? What is the difference between a ticket and an issue? It seems that you can have a ticket that has many issues, but issues can have many tickets...
Does an issue encapsulate a lot of tickets? If so, is the primary work done on the ticket or the issue? The reason I ask is how do you allocate the unit of work to specific people.... or is this not the point of the app?
Sorry in advance for the huge number of questions.