For 3 (or was it 4 or 5?) years, jira users have voted for an enhancement to drive jira groups out of LDAP. The reward for this loyalty? Crowd: a whole new product, with a separate, spendy license. Bizarrely, Confluence is capable of doing this LDAP integration without Crowd. But rather than port that over to Jira and make some users happy, Atlassian decided to take another bite out of their wallets instead.
I actually bought Crowd, out of desperation to solve the problem, but dropped it after a year. Trivially obvious features weren't implemented. It ended up being easier to just script what we needed ourselves.
And don't even get me started on how painful it is to upgrade Atlassian products. shudder