oVirt JIRA instance was recently added a new feature for Kahnban boards: Backlog.
It moves all tasks in TODO column to a new page, 'backlog' [1] and keeps the items in progress/blocked in the main window. 

I think it helps since the backlog is usually very long and its hard to understand what's going on from the board it self.

I've enabled it for the board 'ovirt infra all' but not yet to the 'ovirt infra grouped by epics', 
Lets see how it goes for the following weeks and then decide if to move other boards as well.

its also accessible from the side menu when viewing the board. 

Eyal Edri
Associate Manager
RHV DevOps
EMEA ENG Virtualization R&D
Red Hat Israel

phone: +972-9-7692018
irc: eedri (on #tlv #rhev-dev #rhev-integ)