Pikkis
Prince
Leaders get certain bonuses (1 leader may have 2 UU and a UB, while another have 1 UB and a unique trait
Since UUs and UBs are apparently back, what UUs and UBs would you like to see in CivV?
Personally I think there could be more Siege UUs (such as Scorpio for Rome). I also think there could be mercenaries (such as Genoese crossbowmen) that only certain civs could hire.