Interesting stuff. I appreciate what you are trying to do with the key idea although to only have one single motif risks monotony, particularly when in a largely homophonic style. That said, monotony can be delivered ingeniously such as that first movement in 3rd symphony by Goreki, in which he embed essentially a dark and soulless motif that he sustains for well over 13 minutes, starting within the bass before consistent layering with the other instruments of the orchestra it above while rising steadily in pitch and dynamic intensity… before descending with largely the reverse. All of this is said to depict the machinations of nazi germany. Perhaps even the banality of evil. the key thing is that his motif seldom stops… it keeps going and going. Modulations are sparse, again perhaps to make it devoid of color. All of this is beautifully contrasted with a human voice emerges from those depths afterwards. This piece just came to mind because of the political connotations you’re striving for. Here it is