Bitbucket has been a bit Atlassified a bit.. Hipchat plugins are at the root of the system and it's just a question of time before they require hip-chat to be there for some functionality to work. Don't believe me?

An example of this was the integration of HipChat in confluence. Product was fine but now requires HipChat X amount of plugins to be installed (to be able to insert Emojicon's in Confluence, using confluence own menu's).