I’m sad to see this wrapping up and I’m sorry to see Jimmy go from an ambulance chasing vagabond to a very dark criminal. Kim was his good angle and helped to keep him on the tracks, as curved as they were.
I think Jimmy/Saul is going to be the one character that won’t escape.
I somewhat agree with your assessment. Kim - by herself - is a good person. Jimmy - by himself - is nothing but a crook and grifter. Together - she tends to be a moral compass for him as he wanted to please her and he tends to be the temptation she cannot resist, that keeps her sliding over to the dark side.