Schubert's arpeggione sonata

Im a viola player and i would like a thesis related to the piece Schubert's arpeggione Sonata in A minor for Arpeggione and Piano, D. 821

Im playing the viola arrangement of the piece

I tried to start so i have topics like "My overview on schubert Arpeggione Sonata, defining aspects of schubert's style
Study on Schubert arpeggione; Interpretation and Performance" etc. feel free to suggest if u think theres better directions.