Roman and the series finale *spoilers*.
It annoys me how they just abruptly killed off Roman without any ceremony. I rather liked his character and his ambiguous morality, he deserved either a better death or some form of redemption.
Also, I think that Peter is huge *beep* for going after Roman like that. They were friends for so long, could he at least have given him a chance to explain himself before kidnapping his daughter and taking her hostage? Also, isn't he actually the one that started all of this by selling off Andreas to the croatians and keeping the truth from Destiny?
I rather dislike that they just went and destroyed both main characters in the end, for the sake of an quick and tragic ending.