One of the better catches that CA has had in adapting to new changes introduced in the game is to ensure that Liu Biao and Gongsun Zan's factions now retain their unique court positions when they become an Emperor faction, and gain access to the Imperial Court.
The Yellow Turbans should get the same treatment. There are six unique court positions in tier 2 and 3 of the 190 Yellow Turban factions' courts (Gong Du, Huang Shao, and He Yi) which provide unique bonuses and helps to make the campaign quite a bit more unique vis-à-vis Han faction playthroughs. (Tier 1 consists of "Local Leaders," which are the YT equivalent of Governors, but which either by bug or design don't apply ancillary effects to commanderies.)
I've not added descriptions for Tier 3 in the description below, as it's often pointless to unlock these positions before the late game. In the many YT campaigns I've played since CA introduced the imperial court, I've had no reason (nor time) to research them before becoming an Emperor.
[TLDR: Because of the Yellow Turbans' lack of ways to consistently reduce corruption faction-wide or by buildings, the player is incentivized to take an emperor seat as soon as possible to enable the faction-wide decreases from characters in the imperial court -- making both the unique YT court positions (and therefore, the reforms on the reform tree that unlock the Tier 3 positions) pointless and expensive by cost-benefit loss for the time it takes to research them.]
YT Court Positions by Tier:
- General of the People
- General of the Land
- General of Heaven
- Great Healer
(+15% income from peasantry; +5 authority (this character); +8% replenishment (own armies in local commandery)
- Great Commander
(+25% food from farming (faction-wide); +5 authority (this character); -10% construction cost (local commandery); -10% retinue upkeep (own armies in local commandery)
- Great Learned One
(+10% character experience (faction-wide); +20 bonus experience for units per season (faction-wide); +10% character experience (local commandery); +10 public order (local commandery); +10 unit morale (own armies in local commandery)
- Local Leaders (Max: 5)