Hi,
I've seen a lot of impressive apps for JIRA and my main focus on app evaluation is on project overview, dependency overview, resource planning and customer reporting.
(A Gantt-view is preferable.)
The SCRUM board in JIRA is quite neat. But when it comes to planning for non full time resources, I find it very hard to sum up the total time planned for each person and project/epic. It doesn't fulfill my needs of portfolio management.
Using apps such as Structure will help me, *but* it introduces waterfall methodology using free depth WBS's 
We can't have that when trying to be agile, can we 
So I need tips on what apps you feel, will improve the SCRUM masters work. But at the same time doesn't lure him/her down the dark hole of free depth task hierarchy...