We also provided feedback at the last summit that for "enterprise" level support, more functions need to be optional, allowing for teams to opt in to features when they meet individual customer requirements, and not before.
There seems to be a sense that "you don't have to upgrade" - but that isn't true either, because new features and bug fixes that we want, are tied in with new features that we're not ready to deal with yet, giving a "take it all or leave it all".
There seems to be a sense that "you can control the people". This is completely true for teams of 10. Not so much for teams of 100+. People cannot be all be individually certified and monitored on larger scales. We need controls to lock them out of functionality which we are not ready to support, or that does not integrate with processes.
I can understand the dilemma. You only have so many resources, and you have different customers with competing requirements. You want to deliver the best solution possible with what you have. However, even with the dilemma understood and accepted as requiring a compromise - it does seem the compromise has leaned towards whizz-bang features that never really existed in the first place, over cleaning house. Gadget support missing? Unable to configure working days? There is reason for customers to be concerned here. It is a matter of trust.
Boards aren't really ready to meet existing requirements of existing users, but they were activated as the default. Users even get a warning saying "Please note there will be no further development for the classic boards" (or words to that effect). We've been working with our customers to get them to switch from classic to boards, and they've been stumbling upon the gaps.
In our case - we understood from the start that the "legacy" capability for GreenHopper to supports Epic was poor, and so we'll actually accept the new Epic enabled out of the gate as soon as it is out of labs. Whether it meets our requirements or not, it's surely better than what exists today in the classic interface. We don't need support for epics to be optional. I just wanted to give some additional support for Stefan and Rainer's position, that something is broken around how GreenHopper features are prioritized and delivered, and it is a point of concern for us so much that we also raised a concern at the last summit. (Our concern wasn't just limited to GreenHopper - but GreenHopper was a really good reccent example)
I think what is broken is an understanding of "enterprise" requirements. Atlassian does excellent in the area of supporting small teams. Atlassian is a lot more spotty when it comes to understanding what big companies need, and not only delivering features that scale well, but also delivering features with migration paths and the option to not deploy a feature which either fails to meet requirements for the customer (yet?), or conflicts with requirements from a customer.
That all said - if we accept that GreenHopper delivery of rapid boards to existing customers has been problematic - and move on from here. If you could just fix those misses around porting existing functionality that we take for granted in "classic", and deliver them in "boards", I think there is a lot of goodwill that would happily forgive and forget. 
Hi everyone,
Thanks so much for your votes and comments on this feature request.
We know there are features missing from the new Scrum and Kanban boards. We believe that this feature request is a band aid solution to those missing features. We believe that this feature would take time and energy away from us making the new boards even better.
While we understand the desire for this feature it will add complexity to the product and hinder adoption by new teams. Complexity of the user interface due to configuration options is the most common complaint we receive from customers, and our continued goal is to make GreenHopper easier for teams to adopt. Further, adding this option adds to the ongoing cost of testing and maintenance, which hiders the teams velocity over the long term.
As we continue work on delivering many new features in GreenHopper there are a few options open to you. You can start switching individual teams over to the new boards as they complete their current sprint, project or release. Alternatively, you can continue to use the Planning, Task, Chart and Released Boards and the current functionality by remaining on GreenHopper 5.10.6 and JIRA 5.1.2 , or by using the 'Classic...' option under the Agile menu in GreenHopper 6.0 or later.
Just like any Agile team we have ordered the backlog based upon what we believe provides the greatest value to our customers. There are now over 10,000 customers worldwide so we try to find the right balance between the varied needs of this large, and growing, group. It is not an easy task. Thankfully we have many passionate customers that are able to provide feedback to help drive our vision and order the backlog - thank you!
Thanks for your patience, and we hope you appreciate our open approach to feature requests and backlog ordering.
Cheers,
Shaun Clowes
GreenHopper Product Manager