I can't think of a single character on the show who I like or respect as a person - maybe Harrison but we don't know a lot about his past. They each have their own level of sleaze, with moments of sincerity. That's what makes it a guilty pleasure.
At the end of last season Liv's world was turned upside down and she showed a side of vulnerability. I'm curious to see what this season brings to this group.
Having said all that, if you're looking for a show about DC, I would recommend House of Cards over this one - much better written, but I still enjoy Scandal.