I'm a bit torn on the subject of screen zooming myself, since I only found it to be an issue when going really fast near the end. When platforming at a more comfortable speed it's perfectly fine, and zooming out would make it harder to enjoy all the spritework (like the smaller details of the ground pound, or the screen-filling heft of Cann's final weight stage). A toggle or slider would be a good balance between aesthetics and mechanics, though it's not something to worry too much about right now.
Thanks for the soundcloud link, and hearing this feedback. It bears repeating that this is a very high quality demo, as the tight controls plus the adorable art style and fitting music made this a delight to play through. Can't wait to see Cann again in the future!