Well... with latest version (0.4) of this mod on russian 1.4 version of game I have some wierd results.
Peter the Great have correct portrait - that's good, BUT the same portrait of Peter the Great is assigned to Mazepa (general)!
Сorrect portrait for Mazepa:
Looking at Menshikov (knyaz and general), I see some unfamiliar fat cossac. Mazepa could look like cossac, but it is not his portrait either and by any means he was not so fat.
Сorrect portrait for Menshikov:
I haven't searched for all the ministers, but at least Golovin's portrait is incorrect. This famous general, admiral and minister was notably fat.
Сorrect portrait for Golovin: