A mixed bag as You say, but the overall impression is really nice and I still feel that most tracks are connected. "The Warp" stands out to me, lovely soundscape and composition, and giving me a desire to see what this is all about. Also "The Place Outside ..." and "Time Warp" have a really cozy and nice athmospheric air to them that bridges between the various tracks (the clock in the former may be a bit overplayed though IMHO, could have been more subtle). "Barrenbluff" gives a nice variation to the soundtrack.
All in all, I could really see myself doing a game inspired by this OST :)