Why are the Mendelssohn piano sonatas so meh?
So I listen to classical/academic music a lot, generally, but solo piano is my favourite subgenre, as I also play the instrument. I've long listened to and played a few of Mendelssohn's Lieder ohne Wörter, and they're wonderful, generally quite accesible music. Today I wanted to check out his sonatas, and honestly I'm finding them quite mediocre.
Did he compose most of them early in his career? Why do they seem so behind and the melodies so much less inspired than in the LoW?