I am curious as to why Atlassian chooses not to maintain their documentation sites in the current version of their own products and utilize Crowd for SSO? It seems that they may have a better understanding of the issues that their customers are complaining about in terms of usability, feature loss, critical feature issues, and upgrade problems if they actually did the upgrade first and be their own alpha/beta customer instead of having to deal with the aftermath of customer reported issues and complaints and understand the pain that their customers will experience.
I managed an engineering lab for a product and we utilized our own product at all times; consequently, when we worked on new releases, we were our own alpha customer and were able to identify and resolve the issues before they made it out. As daily users of our own product, it was clear the problems that we introduced, especially in terms of usability and upgrade processes, and thus they never reached our customers.
I don't understand why Atlassian doesn't invest in the same approach? If they used the products that they removed features for, they may understand why we complain about the request to reinstate such features as improvements, instead of bugs, or not deprecating them without a replacement feature, if it really was a feature being used and provided high-value.