Yeah condition removal does sort of ruin the shadow,
Dead Marshes can help there somewhat, but it does suck to see
Saruman's Power Sleep Caradhras or
Deep In Thought against this. I do like the new trackers though, and that's the reason I paired them with a fellowship that should be able to run against most shadows if required.
Greed can be a problem, although if I see it early I can just wait for a
Sleep, Caradhras before loading up the companions, I should add a
Deep In Thought and maybe
Albert Dreary but it annoys me wasting a spot on him because Isengard isn't that common. I really like
Greyhame's ability, has come in handy so many times.