A fairly mellow and cohesive OST. It sounds almost too mechanical, and would benefit from some variations in rhythm, added synths, and/or changed harmonic progressions to break up the monotony.
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I agree with you on the monotony, I think I was trying too hard to stick to the notes I had written and got caught up trying to emphasize the leitmotif.
In my defense, I was also trying to find something that could loop unobtrusively in the background while reading text.
However, chord progressions would have been helpful, I think you’re right.