Sounds like a great flow. We are using trello at the moment. A list each for current focus, bugs and new features for future dev. I can assign issue to someone in trello too but it's not very efficient and seeing lists of issues in a large board can be overwhelming.

We normally get together on Monday to sort these issues. Move urgent ones to the 'focus' list etc. But the main problem is that it's not very motivating to log issues and to solve them. It always looks like there are infinite amounts of work to do.