Culture Means different things to Different Societies.
Ask a Klingon about his Culture and he will Tell you the Tale of Kahless and his struggles from adversity and Spiritual Enlightenment, and then he may tell you the bloody tales of his proficiency in combat and his strength as a warrior, before demonstrating his Strength with a Batleth, if your lucky you will be in 1 Piece at the end, and able to share the story.
Ask a Ferengi about his culture and he will offer to sell you information for 2,000 Bars of Gold Pressed Latinum. After doing so he will Offer you a Copy of the Rules of Aquisition for 4,000 Bars of Gold Pressed Latinum. For More information it will coat you 6,000 Bars of gold Pressed Latinum. For 8,000 Bars you can Own the Great Jewels of The Nagus that have a long and storied history that he didn't just make up on the spot, a History you too can Learn for 10,000 Bars of Gold Pressed Latinum. If you scan the Jewels you will find he Replicated them not 5 mins ago.
The United Federation of Planets will drop a Library on you, like a Whole library, which you can be assured is composed of the literary works of Hundreds of Cultures, from thousands of Years Millions of Authors and Billions a Works, including this very post. Your Guide will then take you to a holodeck where he will regail you with a play by a Poet Who died a Thousand Years ago in a Language 21st Century Humans couldn't Understand, after hours of Torture by Shakespeare you will be wondering what borg Culture is like. "Culture is Irrelevant, you will be assimilated, Resistance is futile."
A Turian will describe his service record and that time he beat Commander Sheppard before taking you to a recruiter.
A Quarian will tell you about the Geth, The Flotilla and their Pilgramidge.
A Krogan will complain about how unfairly they were treated when the Turians inflicted the Genophage on them, conveniently leaving out the part where Krogans had become Genocidal in their lust for expansion, prior to the Genophage.
See? Culture Means different things to different societies. Culture workers shouldn't just be making unity and a little society research, they should each provide special Bonuses based on their ethics or traditions. Unity is the Bond your people share for each other and the empire, Culture workers should show what they are bonding over, not just tell me they are bonding.
Bureocrats help apply the rules and Regulations of the empire, providing Services to those who have earned them. In Some societies that may be an important bond, such as Byzintine Bureaucracy. Not many would, to suggest that Bureocrats produce Unity is a very top down view, the Idea that a Society is Built on its Current leader only applies to certain Authoritarian Societies. For most Empires Unity, the Bond People have towards each other and the State is created by the people, it is a Foundation upon which the society is built, the Faith People Have in the Government allows the government to craft policy to suit their needs. An Empire without these bonds, without Unity, is doomed to Failure.