Perhaps rather than asking “what do you hate”, which inevitably will lead to a divisive rant fest, it would be better to ask: “what would you like to see improved?”.

Dragging Atlassian is very much in vogue on HN these days, and yes, they deserve some of it. That said, the spirit of HN calls its users towards curiosity rather than division, and invoking “hate” is without question a divisive tactic.

(Edit) adding a link to the guidelines: https://news.ycombinator.com/newsguidelines.html

(Edit 2): It would also be prudent of you to mention you’re building a product that is Confluence-adjacent: https://news.ycombinator.com/item?id=30295553