Agreed, I think 90% of the things I've worked on with this piece are the dynamics and phrasing in the first section, and then where it returns later on in the piece, and I'm always a bit uneasy with it (even though it is the easiest part of the piece, based on technique).
I like how you use 'frenzied' and 'at ease' as descriptions. Most of the critiques I have received on this piece were that it needed more 'dynamic contrast' (which isn't wrong, it still does, it just needs to be applied correctly), yet really, just exaggerating the markings on the page doesn't really cover the whole problem, and in some sections (like you mention in the beginning) could possibly make the problem worse by taking away the unique feel that each section has. I think those descriptive words do a better job at illustrating where you could use such contrast. I also like your comparison of this piece to the moonlight sonata; I think that's a good comparison.