I think she has simmered down since the beginning and became a more likable character for it. But she is still (or even more now that she is "average nice person" rather than "mind splitting perky Mary Sue") just not main heroine material.
Roman, I think he is popular with the fan of gay storylines naturally. With the more average fans, it seems they like him well enough, especially as a sidekick to Ingo and Annette, but they don't seem to be that passionate about him when he has no storyline. So I guess vague but not necessarily passionate benevolence seems to be the general feeling towards him? Which is still good since there are plenty of characters who aren't necessarily evil but quite disliked such a Celine or Mike.