It seems like they're going to add Great People who weren't exactly historical leaders as leaders in Civ (see Confucius). Then they can solve this leader problem by adding Tolstoy or Dostoevsky as Russian leader of Age 3. Well, I love Russian literature, so I wouldn't complain.Modern Russia is where the problem really lies. Assuming Modern Age starts around 1800 with Industrialization and all the Social/Political problems associated, then the 225 or so years since have been 118 years of Imperial Russia, 71 years of the Soviet Union, and about 33 years of the current Russian State. That last has the problem that all of its leaders are too recent and the other problem is that neither the Soviet Union nor the post-Soviet Russian State leave a good feeling behind when contemplating them.
On the other hand, Imperial Russia post 1800 doesn't provide a lot of historically-accurate decent Leaders either. They could use some distinctly Off The Wall leaders, though: Rasputin springs to mind, or Bakunin the Anarchist. What the heck, if they can have Napoleon the Corsican Ogre as a Leader, why not the Mad Monk or a Leader who was steadfastly against any form of government? Think of the attributes either one could get . . .

Just kidding, I still prefer an emperor, even if he wasn't very iconic.