Yeah, Trace Memory also felt a little on the light-weight side to me... maybe because it didn't hide it's linearity enough (Nancy Draw doesn't hide its linearity at all pretty much) *shrug*. But Cing REALLY nailed the atmosphere.
Touch Detective is on the other end of the spectrum, it's SOOO crazy and open-ended that the puzzles have the most un-guessable-un-fathomable answers evar, at least to me. T_T