I agree, even the use of the changing the text speed does a lot to give a sense of unease / instability. I really love the sense of isolation in this work, purely from the text alone. I do think this is a concept worth finishing, or at least seeing some sort of conclusion eventually.
edit: I read the description and I don't know if you necessarily need items (though I think multiple choices leading to different endings would be interesting). I enjoyed the concept in itself and even if it's just a linear exploration of what it means to pursue light (hanging onto feelings) or letting go.