I didn't hate The Revenants.  It's not going to be anything too substantial - I mean, it originally came free with a magazine, but it does have some moments in the story I did appreciate.  It's a fun little adventure where the Doctor winds up waiting many years for Ian and Barbara, a touching little character moment informed by Susan's recent departure.

I think it really informs the Doctor's relationship with Ian and Barbara and gives a little more warmth between them, which I think works in giving The Revenants a basic sense of substance.  That's something, at least, and the audio does a great job at establishing mood and atmosphere, leading to a nice and cozy listening experience.  There's this framing device where Ian is remembering the story that felt completely unnecessary, but otherwise not a whole lot I found wrong with The Revenants.