We use Jira to manage web development projects, and we use epics to break up website builds into different phases (ie initial development, system testing, feedback).
It would be great to see consolidated numbers - especially the number of hours logged by each user, from individual tasks that fall under an epic, directly from the epic as we often need to monitor if we are getting close to, or over the allotted hours. Currently it requires alot of manual effort from our team to find the hours through the quantify app.